{"product_id":"broad-headed-hillstream-loach-purple-finned-hillstream-loach","title":"Broad-headed Hillstream Loach (Purple-finned Hillstream Loach)","description":"\u003ch2\u003e\n\u003cstrong\u003eSpecies Overview -\u003c\/strong\u003ePseudogastromyzon laticeps\u003c\/h2\u003e\n\u003cp data-end=\"578\" data-start=\"534\"\u003e← Back to \u003ca href=\"https:\/\/eiraaquatics.com\/collections\/loach\"\u003e\u003cstrong\u003e\u003cem data-end=\"1140\" data-start=\"1121\"\u003eLoach\u003c\/em\u003e\u003c\/strong\u003e\u003c\/a\u003e (genus overview)\u003c\/p\u003e\n\u003cp data-end=\"977\" data-start=\"580\"\u003eRevered by native fish enthusiasts as \u003cem data-end=\"676\" data-start=\"618\"\u003e“the purple-winged spirit of eastern Guangdong streams,”\u003c\/em\u003e the Broad-headed \u003cstrong\u003eHillstream Loach\u003c\/strong\u003e is distinguished by its extremely flattened, rock-hugging body, powerful adhesive ability, and the mysterious violet sheen that appears along the fin margins during the breeding season. Among China’s endemic small benthic fishes, it stands as a truly unique species.\u003c\/p\u003e\n\u003chr data-end=\"982\" data-start=\"979\"\u003e\n\u003ch2 data-end=\"1026\" data-start=\"984\"\u003eI. Basic Information (Species Overview)\u003c\/h2\u003e\n\u003cp data-end=\"1733\" data-start=\"1028\"\u003e\u003cstrong data-end=\"1044\" data-start=\"1028\"\u003eCommon Name:\u003c\/strong\u003e Broad-headed Hillstream Loach\u003cbr data-end=\"1077\" data-start=\"1074\"\u003e\u003cstrong data-end=\"1093\" data-start=\"1077\"\u003eOther Names:\u003c\/strong\u003e Purple-finned Hillstream Loach, Eastern Guangdong Purple-fin Loach\u003cbr data-end=\"1163\" data-start=\"1160\"\u003e\u003cstrong data-end=\"1180\" data-start=\"1163\"\u003eEnglish Name:\u003c\/strong\u003e Purple-finned Hillstream Loach (non-official, hobbyist usage)\u003cbr data-end=\"1245\" data-start=\"1242\"\u003e\u003cstrong data-end=\"1265\" data-start=\"1245\"\u003eScientific Name:\u003c\/strong\u003e \u003cem data-end=\"1294\" data-start=\"1266\"\u003ePseudogastromyzon laticeps\u003c\/em\u003e Chen \u0026amp; Zheng, 1980\u003cbr data-end=\"1316\" data-start=\"1313\"\u003e\u003cstrong data-end=\"1327\" data-start=\"1316\"\u003eFamily:\u003c\/strong\u003e Balitoridae\u003cbr data-end=\"1342\" data-start=\"1339\"\u003e\u003cstrong data-end=\"1352\" data-start=\"1342\"\u003eGenus:\u003c\/strong\u003e \u003cem data-end=\"1372\" data-start=\"1353\"\u003ePseudogastromyzon\u003c\/em\u003e\u003cbr data-end=\"1375\" data-start=\"1372\"\u003e\u003cstrong data-end=\"1392\" data-start=\"1375\"\u003eNative Range:\u003c\/strong\u003e Independent coastal mountain streams of eastern Guangdong Province, China\u003cbr data-end=\"1469\" data-start=\"1466\"\u003e\u003cstrong data-end=\"1488\" data-start=\"1469\"\u003eMaximum Length:\u003c\/strong\u003e 5–6 cm (males slightly larger than females)\u003cbr data-end=\"1535\" data-start=\"1532\"\u003e\u003cstrong data-end=\"1548\" data-start=\"1535\"\u003eLifespan:\u003c\/strong\u003e Approximately 4–5 years under proper captive care\u003cbr data-end=\"1601\" data-start=\"1598\"\u003e\u003cstrong data-end=\"1625\" data-start=\"1601\"\u003eConservation Status:\u003c\/strong\u003e Not listed as a protected species, but considered a narrow-range endemic with vulnerable wild populations\u003c\/p\u003e\n\u003chr data-end=\"1738\" data-start=\"1735\"\u003e\n\u003ch2 data-end=\"1786\" data-start=\"1740\"\u003eII. Natural Distribution and Native Habitat\u003c\/h2\u003e\n\u003ch3 data-end=\"1818\" data-start=\"1788\"\u003e1. Geographic Distribution\u003c\/h3\u003e\n\u003cp data-end=\"1918\" data-start=\"1820\"\u003eThis species is \u003cstrong data-end=\"1906\" data-start=\"1836\"\u003estrictly limited to eastern Guangdong’s coastal mountain drainages\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul data-end=\"2142\" data-start=\"1920\"\u003e\n\u003cli data-end=\"1999\" data-start=\"1920\"\u003e\n\u003cp data-end=\"1999\" data-start=\"1922\"\u003eDapeng Peninsula, Shenzhen (e.g., Qiniang Mountain, Paiya Mountain streams)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2034\" data-start=\"2000\"\u003e\n\u003cp data-end=\"2034\" data-start=\"2002\"\u003eLianhua Mountain area, Huizhou\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2072\" data-start=\"2035\"\u003e\n\u003cp data-end=\"2072\" data-start=\"2037\"\u003eHaifeng and Luhe regions, Shanwei\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2142\" data-start=\"2073\"\u003e\n\u003cp data-end=\"2142\" data-start=\"2075\"\u003ePhoenix Mountain and selected tributaries in Chaozhou and Raoping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2303\" data-start=\"2144\"\u003eIt does \u003cstrong data-end=\"2159\" data-start=\"2152\"\u003enot\u003c\/strong\u003e occur in the Pearl River main system, Xijiang, or Beijiang rivers.\u003cbr data-end=\"2229\" data-start=\"2226\"\u003eGeographic isolation from other \u003cem data-end=\"2280\" data-start=\"2261\"\u003ePseudogastromyzon\u003c\/em\u003e species is pronounced.\u003c\/p\u003e\n\u003chr data-end=\"2308\" data-start=\"2305\"\u003e\n\u003ch3 data-end=\"2347\" data-start=\"2310\"\u003e2. Native Habitat Characteristics\u003c\/h3\u003e\n\u003cul data-end=\"2776\" data-start=\"2349\"\u003e\n\u003cli data-end=\"2440\" data-start=\"2349\"\u003e\n\u003cp data-end=\"2440\" data-start=\"2351\"\u003e\u003cstrong data-end=\"2366\" data-start=\"2351\"\u003eWater Type:\u003c\/strong\u003e Small headwater streams, mountain brooks, shallow runs below waterfalls\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2533\" data-start=\"2441\"\u003e\n\u003cp data-end=\"2533\" data-start=\"2443\"\u003e\u003cstrong data-end=\"2452\" data-start=\"2443\"\u003eFlow:\u003c\/strong\u003e Alternating gentle to fast currents, consistently high oxygen levels (\u0026gt;6 mg\/L)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2609\" data-start=\"2534\"\u003e\n\u003cp data-end=\"2609\" data-start=\"2536\"\u003e\u003cstrong data-end=\"2550\" data-start=\"2536\"\u003eSubstrate:\u003c\/strong\u003e Smooth bedrock, slate, and rounded cobbles; minimal silt\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2702\" data-start=\"2610\"\u003e\n\u003cp data-end=\"2702\" data-start=\"2612\"\u003e\u003cstrong data-end=\"2628\" data-start=\"2612\"\u003eTemperature:\u003c\/strong\u003e 12–22°C (summer temperatures may briefly reach 26°C under forest shade)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2776\" data-start=\"2703\"\u003e\n\u003cp data-end=\"2776\" data-start=\"2705\"\u003e\u003cstrong data-end=\"2725\" data-start=\"2705\"\u003eWater Chemistry:\u003c\/strong\u003e Clear water, pH 6.5–7.2, soft water (GH 2–5 dGH)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2933\" data-start=\"2778\"\u003e👉 These conditions indicate that the species favors \u003cstrong data-end=\"2866\" data-start=\"2831\"\u003eclean, oxygen-rich environments\u003c\/strong\u003e, but does \u003cstrong data-end=\"2932\" data-start=\"2877\"\u003enot require extreme torrent conditions at all times\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-end=\"2938\" data-start=\"2935\"\u003e\n\u003ch2 data-end=\"2980\" data-start=\"2940\"\u003eIII. Morphology and Sexual Dimorphism\u003c\/h2\u003e\n\u003ch3 data-end=\"3007\" data-start=\"2982\"\u003e1. General Morphology\u003c\/h3\u003e\n\u003cul data-end=\"3389\" data-start=\"3009\"\u003e\n\u003cli data-end=\"3081\" data-start=\"3009\"\u003e\n\u003cp data-end=\"3081\" data-start=\"3011\"\u003eBody extremely dorsoventrally flattened, oval “suction-disc” profile\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3162\" data-start=\"3082\"\u003e\n\u003cp data-end=\"3162\" data-start=\"3084\"\u003eBroad head (the origin of the common name “broad-headed”) with rounded snout\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3221\" data-start=\"3163\"\u003e\n\u003cp data-end=\"3221\" data-start=\"3165\"\u003eInferior mouth with well-developed adhesive structures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3303\" data-start=\"3222\"\u003e\n\u003cp data-end=\"3303\" data-start=\"3224\"\u003eBase coloration ranges from brown to olive green with irregular dark blotches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3389\" data-start=\"3304\"\u003e\n\u003cp data-end=\"3389\" data-start=\"3306\"\u003eFins semi-transparent, showing metallic blue-violet iridescence at certain angles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"3394\" data-start=\"3391\"\u003e\n\u003ch3 data-end=\"3457\" data-start=\"3396\"\u003e2. Secondary Sexual Characteristics (Pronounced in Males)\u003c\/h3\u003e\n\u003cul data-end=\"3706\" data-start=\"3459\"\u003e\n\u003cli data-end=\"3525\" data-start=\"3459\"\u003e\n\u003cp data-end=\"3525\" data-start=\"3461\"\u003eThickened and elongated first rays of pectoral and pelvic fins\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3611\" data-start=\"3526\"\u003e\n\u003cp data-end=\"3611\" data-start=\"3528\"\u003eDistinct purple-red to blue-violet coloration along dorsal and caudal fin margins\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3666\" data-start=\"3612\"\u003e\n\u003cp data-end=\"3666\" data-start=\"3614\"\u003eFine white nuptial tubercles on the snout and head\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3706\" data-start=\"3667\"\u003e\n\u003cp data-end=\"3706\" data-start=\"3669\"\u003eIncreased contrast of body markings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"3711\" data-start=\"3708\"\u003e\n\u003ch3 data-end=\"3747\" data-start=\"3713\"\u003e3. Sex Identification (Adults)\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-end=\"4041\" data-start=\"3749\"\u003e\n\u003cthead data-end=\"3774\" data-start=\"3749\"\u003e\n\u003ctr data-end=\"3774\" data-start=\"3749\"\u003e\n\u003cth data-col-size=\"sm\" data-end=\"3757\" data-start=\"3749\"\u003eTrait\u003c\/th\u003e\n\u003cth data-col-size=\"sm\" data-end=\"3764\" data-start=\"3757\"\u003eMale\u003c\/th\u003e\n\u003cth data-col-size=\"sm\" data-end=\"3774\" data-start=\"3764\"\u003eFemale\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-end=\"4041\" data-start=\"3789\"\u003e\n\u003ctr data-end=\"3873\" data-start=\"3789\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"3802\" data-start=\"3789\"\u003eBody Shape\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"3831\" data-start=\"3802\"\u003eMore slender, broader head\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"3873\" data-start=\"3831\"\u003eFuller abdomen, especially when gravid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"3958\" data-start=\"3874\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"3886\" data-start=\"3874\"\u003eFin Color\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"3924\" data-start=\"3886\"\u003eStrong purple tones during breeding\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"3958\" data-start=\"3924\"\u003eFins pale, little to no purple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4041\" data-start=\"3959\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"3970\" data-start=\"3959\"\u003eBehavior\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4011\" data-start=\"3970\"\u003eActively patrols and defends territory\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4041\" data-start=\"4011\"\u003eMostly stationary on rocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-end=\"4046\" data-start=\"4043\"\u003e\n\u003ch2 data-end=\"4079\" data-start=\"4048\"\u003eIV. Temperament and Behavior\u003c\/h2\u003e\n\u003cul data-end=\"4489\" data-start=\"4081\"\u003e\n\u003cli data-end=\"4168\" data-start=\"4081\"\u003e\n\u003cp data-end=\"4168\" data-start=\"4083\"\u003e\u003cstrong data-end=\"4102\" data-start=\"4083\"\u003eActivity Level:\u003c\/strong\u003e Moderate; primarily slow crawling and short hops between stones\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4267\" data-start=\"4169\"\u003e\n\u003cp data-end=\"4267\" data-start=\"4171\"\u003e\u003cstrong data-end=\"4186\" data-start=\"4171\"\u003eLocomotion:\u003c\/strong\u003e “Walking” with pectoral fins combined with tail flicks; poor sustained swimmer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4357\" data-start=\"4268\"\u003e\n\u003cp data-end=\"4357\" data-start=\"4270\"\u003e\u003cstrong data-end=\"4289\" data-start=\"4270\"\u003eTerritoriality:\u003c\/strong\u003e Low to moderate; males defend small rock surfaces during breeding\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4415\" data-start=\"4358\"\u003e\n\u003cp data-end=\"4415\" data-start=\"4360\"\u003e\u003cstrong data-end=\"4375\" data-start=\"4360\"\u003eAggression:\u003c\/strong\u003e Extremely low; strictly non-predatory\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4489\" data-start=\"4416\"\u003e\n\u003cp data-end=\"4489\" data-start=\"4418\"\u003e\u003cstrong data-end=\"4435\" data-start=\"4418\"\u003eDaily Rhythm:\u003c\/strong\u003e Primarily diurnal, but most active at dawn and dusk\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"4604\" data-start=\"4491\"\u003e💡 This species functions as a \u003cstrong data-end=\"4550\" data-start=\"4522\"\u003emicro-ecosystem engineer\u003c\/strong\u003e, grazing biofilm and maintaining clean rock surfaces.\u003c\/p\u003e\n\u003chr data-end=\"4609\" data-start=\"4606\"\u003e\n\u003ch2 data-end=\"4653\" data-start=\"4611\"\u003eV. Care Difficulty and Suitable Keepers\u003c\/h2\u003e\n\u003cp data-end=\"4699\" data-start=\"4655\"\u003e\u003cstrong data-end=\"4670\" data-start=\"4655\"\u003eCare Level:\u003c\/strong\u003e ★★★☆☆ (Moderately difficult)\u003c\/p\u003e\n\u003ch3 data-end=\"4721\" data-start=\"4701\"\u003eBest suited for:\u003c\/h3\u003e\n\u003cul data-end=\"4949\" data-start=\"4722\"\u003e\n\u003cli data-end=\"4793\" data-start=\"4722\"\u003e\n\u003cp data-end=\"4793\" data-start=\"4724\"\u003eExperienced aquarists familiar with coldwater or hillstream systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4866\" data-start=\"4794\"\u003e\n\u003cp data-end=\"4866\" data-start=\"4796\"\u003eKeepers able to provide stable low temperatures and high oxygenation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4949\" data-start=\"4867\"\u003e\n\u003cp data-end=\"4949\" data-start=\"4869\"\u003eHobbyists interested in observing benthic behavior and ecological interactions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"4975\" data-start=\"4951\"\u003eNot recommended for:\u003c\/h3\u003e\n\u003cul data-end=\"5048\" data-start=\"4976\"\u003e\n\u003cli data-end=\"4989\" data-start=\"4976\"\u003e\n\u003cp data-end=\"4989\" data-start=\"4978\"\u003eBeginners\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5048\" data-start=\"4990\"\u003e\n\u003cp data-end=\"5048\" data-start=\"4992\"\u003eAquarists without temperature control in warm climates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"5188\" data-start=\"5050\"\u003e⚠️ \u003cstrong data-end=\"5083\" data-start=\"5053\"\u003ePrimary causes of failure:\u003c\/strong\u003e prolonged temperatures above 26°C, organic buildup in substrate, and inappropriate high-protein feeding.\u003c\/p\u003e\n\u003chr data-end=\"5193\" data-start=\"5190\"\u003e\n\u003ch2 data-end=\"5226\" data-start=\"5195\"\u003eVI. Aquarium Care Guidelines\u003c\/h2\u003e\n\u003ch3 data-end=\"5248\" data-start=\"5228\"\u003e1. Aquarium Size\u003c\/h3\u003e\n\u003cul data-end=\"5379\" data-start=\"5250\"\u003e\n\u003cli data-end=\"5324\" data-start=\"5250\"\u003e\n\u003cp data-end=\"5324\" data-start=\"5252\"\u003e\u003cstrong data-end=\"5264\" data-start=\"5252\"\u003eMinimum:\u003c\/strong\u003e 40 cm tank for one individual or a small group (2–3 fish)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5379\" data-start=\"5325\"\u003e\n\u003cp data-end=\"5379\" data-start=\"5327\"\u003e\u003cstrong data-end=\"5337\" data-start=\"5327\"\u003eIdeal:\u003c\/strong\u003e 60 cm or larger for groups of 4 or more\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"5466\" data-start=\"5381\"\u003e\u003cstrong data-end=\"5399\" data-start=\"5381\"\u003eKey principle:\u003c\/strong\u003e prioritize horizontal footprint and bottom area rather than depth.\u003c\/p\u003e\n\u003chr data-end=\"5471\" data-start=\"5468\"\u003e\n\u003ch3 data-end=\"5496\" data-start=\"5473\"\u003e2. Water Parameters\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-end=\"5791\" data-start=\"5498\"\u003e\n\u003cthead data-end=\"5539\" data-start=\"5498\"\u003e\n\u003ctr data-end=\"5539\" data-start=\"5498\"\u003e\n\u003cth data-col-size=\"sm\" data-end=\"5510\" data-start=\"5498\"\u003eParameter\u003c\/th\u003e\n\u003cth data-col-size=\"sm\" data-end=\"5530\" data-start=\"5510\"\u003eRecommended Range\u003c\/th\u003e\n\u003cth data-col-size=\"md\" data-end=\"5539\" data-start=\"5530\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-end=\"5791\" data-start=\"5554\"\u003e\n\u003ctr data-end=\"5636\" data-start=\"5554\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5568\" data-start=\"5554\"\u003eTemperature\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5578\" data-start=\"5568\"\u003e14–26°C\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5636\" data-start=\"5578\"\u003e≤26°C considered safe; short-term tolerance up to 28°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5684\" data-start=\"5637\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5642\" data-start=\"5637\"\u003epH\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5654\" data-start=\"5642\"\u003e6.5 – 7.2\u003c\/td\u003e\n\u003ctd data-end=\"5684\" data-start=\"5654\" data-col-size=\"md\"\u003eSlightly acidic to neutral\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5726\" data-start=\"5685\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5690\" data-start=\"5685\"\u003eGH\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5702\" data-start=\"5690\"\u003e2 – 5 dGH\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5726\" data-start=\"5702\"\u003eSoft water preferred\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5791\" data-start=\"5727\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5746\" data-start=\"5727\"\u003eDissolved Oxygen\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5757\" data-start=\"5746\"\u003e\u0026gt; 6 mg\/L\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5791\" data-start=\"5757\"\u003eEssential for long-term health\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-end=\"5796\" data-start=\"5793\"\u003e\n\u003ch3 data-end=\"5815\" data-start=\"5798\"\u003e3. Tank Setup\u003c\/h3\u003e\n\u003cp data-end=\"5831\" data-start=\"5817\"\u003e\u003cstrong data-end=\"5831\" data-start=\"5817\"\u003eSubstrate:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"5962\" data-start=\"5832\"\u003e\n\u003cli data-end=\"5892\" data-start=\"5832\"\u003e\n\u003cp data-end=\"5892\" data-start=\"5834\"\u003eFine sand or small gravel to simulate natural streambeds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5962\" data-start=\"5893\"\u003e\n\u003cp data-end=\"5962\" data-start=\"5895\"\u003eBare-bottom setups acceptable if ample hard surfaces are provided\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"5978\" data-start=\"5964\"\u003e\u003cstrong data-end=\"5978\" data-start=\"5964\"\u003eHardscape:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"6158\" data-start=\"5979\"\u003e\n\u003cli data-end=\"6049\" data-start=\"5979\"\u003e\n\u003cp data-end=\"6049\" data-start=\"5981\"\u003eExtensive use of smooth rocks, slate, or river stones is essential\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6121\" data-start=\"6050\"\u003e\n\u003cp data-end=\"6121\" data-start=\"6052\"\u003eStones should form crevices and undersides for shelter and spawning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6158\" data-start=\"6122\"\u003e\n\u003cp data-end=\"6158\" data-start=\"6124\"\u003eDriftwood may be added sparingly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"6175\" data-start=\"6160\"\u003e\u003cstrong data-end=\"6175\" data-start=\"6160\"\u003eFiltration:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"6270\" data-start=\"6176\"\u003e\n\u003cli data-end=\"6270\" data-start=\"6176\"\u003e\n\u003cp data-end=\"6270\" data-start=\"6178\"\u003eEfficient filtration (canister or strong hang-on-back) to maintain clarity and oxygenation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"6287\" data-start=\"6272\"\u003e\u003cstrong data-end=\"6287\" data-start=\"6272\"\u003eWater Flow:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"6480\" data-start=\"6288\"\u003e\n\u003cli data-end=\"6371\" data-start=\"6288\"\u003e\n\u003cp data-end=\"6371\" data-start=\"6290\"\u003ePowerheads or directional outlets recommended to create gentle to moderate flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6480\" data-start=\"6372\"\u003e\n\u003cp data-end=\"6480\" data-start=\"6374\"\u003eWhile extreme current is not mandatory, flow improves feeding efficiency, activity, and overall vitality\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"6485\" data-start=\"6482\"\u003e\n\u003ch2 data-end=\"6511\" data-start=\"6487\"\u003eVII. Diet and Feeding\u003c\/h2\u003e\n\u003ch3 data-end=\"6532\" data-start=\"6513\"\u003e1. Natural Diet\u003c\/h3\u003e\n\u003cul data-end=\"6635\" data-start=\"6534\"\u003e\n\u003cli data-end=\"6561\" data-start=\"6534\"\u003e\n\u003cp data-end=\"6561\" data-start=\"6536\"\u003eDiatoms and green algae\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6586\" data-start=\"6562\"\u003e\n\u003cp data-end=\"6586\" data-start=\"6564\"\u003eBiofilm and aufwuchs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6635\" data-start=\"6587\"\u003e\n\u003cp data-end=\"6635\" data-start=\"6589\"\u003eMicroscopic invertebrates (rotifers, copepods)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"6640\" data-start=\"6637\"\u003e\n\u003ch3 data-end=\"6680\" data-start=\"6642\"\u003e2. Captive Feeding Recommendations\u003c\/h3\u003e\n\u003cp data-end=\"6699\" data-start=\"6682\"\u003e\u003cstrong data-end=\"6699\" data-start=\"6682\"\u003eStaple Foods:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"6786\" data-start=\"6700\"\u003e\n\u003cli data-end=\"6737\" data-start=\"6700\"\u003e\n\u003cp data-end=\"6737\" data-start=\"6702\"\u003eHigh-quality sinking algae wafers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6786\" data-start=\"6738\"\u003e\n\u003cp data-end=\"6786\" data-start=\"6740\"\u003eNaturally grown algae on tank surfaces (ideal)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"6812\" data-start=\"6788\"\u003e\u003cstrong data-end=\"6812\" data-start=\"6788\"\u003eSupplementary Foods:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"6914\" data-start=\"6813\"\u003e\n\u003cli data-end=\"6851\" data-start=\"6813\"\u003e\n\u003cp data-end=\"6851\" data-start=\"6815\"\u003eFinely crushed frozen mysis shrimp\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6871\" data-start=\"6852\"\u003e\n\u003cp data-end=\"6871\" data-start=\"6854\"\u003eSpirulina paste\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6914\" data-start=\"6872\"\u003e\n\u003cp data-end=\"6914\" data-start=\"6874\"\u003eBlanched spinach leaves (pesticide-free)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"6926\" data-start=\"6916\"\u003e\u003cstrong data-end=\"6926\" data-start=\"6916\"\u003eAvoid:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"7002\" data-start=\"6927\"\u003e\n\u003cli data-end=\"6983\" data-start=\"6927\"\u003e\n\u003cp data-end=\"6983\" data-start=\"6929\"\u003eHigh-protein carnivorous foods (bloodworms, tubifex)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"7002\" data-start=\"6984\"\u003e\n\u003cp data-end=\"7002\" data-start=\"6986\"\u003eFloating pellets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"7068\" data-start=\"7004\"\u003e💡 Feeding is most effective in the evening or after lights-out.\u003c\/p\u003e\n\u003chr data-end=\"7073\" data-start=\"7070\"\u003e\n\u003ch2 data-end=\"7118\" data-start=\"7075\"\u003eVIII. Tankmate Compatibility (Important)\u003c\/h2\u003e\n\u003ch3 data-end=\"7144\" data-start=\"7120\"\u003e✅ Suitable Tankmates\u003c\/h3\u003e\n\u003cul data-end=\"7317\" data-start=\"7145\"\u003e\n\u003cli data-end=\"7191\" data-start=\"7145\"\u003e\n\u003cp data-end=\"7191\" data-start=\"7147\"\u003eLong-finned Minnows (\u003cem data-end=\"7183\" data-start=\"7168\"\u003eOpsariichthys\u003c\/em\u003e spp.)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"7226\" data-start=\"7192\"\u003e\n\u003cp data-end=\"7226\" data-start=\"7194\"\u003eChinese Minnows (\u003cem data-end=\"7218\" data-start=\"7211\"\u003eZacco\u003c\/em\u003e spp.)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"7262\" data-start=\"7227\"\u003e\n\u003cp data-end=\"7262\" data-start=\"7229\"\u003eGobies (\u003cem data-end=\"7259\" data-start=\"7237\"\u003eRhinogobius giurinus\u003c\/em\u003e)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"7317\" data-start=\"7263\"\u003e\n\u003cp data-end=\"7317\" data-start=\"7265\"\u003eOther gentle benthic species such as Panda Loaches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"7345\" data-start=\"7319\"\u003e❌ Unsuitable Tankmates\u003c\/h3\u003e\n\u003cul data-end=\"7484\" data-start=\"7346\"\u003e\n\u003cli data-end=\"7418\" data-start=\"7346\"\u003e\n\u003cp data-end=\"7418\" data-start=\"7348\"\u003eSuckermouth catfish (e.g., plecos) — competition and physical stress\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"7452\" data-start=\"7419\"\u003e\n\u003cp data-end=\"7452\" data-start=\"7421\"\u003eAggressive cichlids or bettas\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"7484\" data-start=\"7453\"\u003e\n\u003cp data-end=\"7484\" data-start=\"7455\"\u003eOvercrowded community tanks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"7600\" data-start=\"7486\"\u003e📌 \u003cstrong data-end=\"7507\" data-start=\"7489\"\u003eKey principle:\u003c\/strong\u003e avoid competition for bottom space and ensure compatible temperature and water requirements.\u003c\/p\u003e\n\u003chr data-end=\"7605\" data-start=\"7602\"\u003e\n\u003ch2 data-end=\"7631\" data-start=\"7607\"\u003eIX. Breeding Behavior\u003c\/h2\u003e\n\u003ch3 data-end=\"7668\" data-start=\"7633\"\u003e1. Reproductive Characteristics\u003c\/h3\u003e\n\u003cul data-end=\"7979\" data-start=\"7670\"\u003e\n\u003cli data-end=\"7753\" data-start=\"7670\"\u003e\n\u003cp data-end=\"7753\" data-start=\"7672\"\u003e\u003cstrong data-end=\"7692\" data-start=\"7672\"\u003eBreeding Season:\u003c\/strong\u003e Spring to early summer (18–21°C, often linked to rainfall)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"7838\" data-start=\"7754\"\u003e\n\u003cp data-end=\"7838\" data-start=\"7756\"\u003e\u003cstrong data-end=\"7770\" data-start=\"7756\"\u003eCourtship:\u003c\/strong\u003e Males display purple fins and guide females toward spawning sites\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"7894\" data-start=\"7839\"\u003e\n\u003cp data-end=\"7894\" data-start=\"7841\"\u003e\u003cstrong data-end=\"7860\" data-start=\"7841\"\u003eSpawning Sites:\u003c\/strong\u003e Undersides of rocks or crevices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"7979\" data-start=\"7895\"\u003e\n\u003cp data-end=\"7979\" data-start=\"7897\"\u003e\u003cstrong data-end=\"7915\" data-start=\"7897\"\u003eParental Care:\u003c\/strong\u003e Limited guarding by males; less intense than in \u003cem data-end=\"7979\" data-start=\"7964\"\u003eOpsariichthys\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"7984\" data-start=\"7981\"\u003e\n\u003ch3 data-end=\"8012\" data-start=\"7986\"\u003e2. Breeding Challenges\u003c\/h3\u003e\n\u003cul data-end=\"8192\" data-start=\"8014\"\u003e\n\u003cli data-end=\"8064\" data-start=\"8014\"\u003e\n\u003cp data-end=\"8064\" data-start=\"8016\"\u003eHighly sensitive to water quality fluctuations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"8126\" data-start=\"8065\"\u003e\n\u003cp data-end=\"8126\" data-start=\"8067\"\u003eEggs require good water movement to prevent fungal growth\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"8192\" data-start=\"8127\"\u003e\n\u003cp data-end=\"8192\" data-start=\"8129\"\u003eFry are difficult to raise, requiring microalgae and rotifers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"8279\" data-start=\"8194\"\u003e👉 Most specimens in the trade originate from professional captive breeding programs.\u003c\/p\u003e\n\u003chr data-end=\"8284\" data-start=\"8281\"\u003e\n\u003ch2 data-end=\"8325\" data-start=\"8286\"\u003eX. Common Issues and Important Notes\u003c\/h2\u003e\n\u003cul data-end=\"8718\" data-start=\"8327\"\u003e\n\u003cli data-end=\"8426\" data-start=\"8327\"\u003e\n\u003cp data-end=\"8426\" data-start=\"8329\"\u003e\u003cstrong data-end=\"8350\" data-start=\"8329\"\u003eHeat sensitivity:\u003c\/strong\u003e prolonged exposure above 26°C causes metabolic stress; \u0026gt;28°C may be fatal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"8489\" data-start=\"8427\"\u003e\n\u003cp data-end=\"8489\" data-start=\"8429\"\u003e\u003cstrong data-end=\"8451\" data-start=\"8429\"\u003eSubstrate hygiene:\u003c\/strong\u003e organic buildup can lead to fin rot\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"8554\" data-start=\"8490\"\u003e\n\u003cp data-end=\"8554\" data-start=\"8492\"\u003e\u003cstrong data-end=\"8518\" data-start=\"8492\"\u003eSeasonal availability:\u003c\/strong\u003e best acquired in spring or autumn\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"8718\" data-start=\"8555\"\u003e\n\u003cp data-end=\"8586\" data-start=\"8557\"\u003e\u003cstrong data-end=\"8584\" data-start=\"8557\"\u003eEthical considerations:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"8718\" data-start=\"8589\"\u003e\n\u003cli data-end=\"8623\" data-start=\"8589\"\u003e\n\u003cp data-end=\"8623\" data-start=\"8591\"\u003eA narrow-range endemic species\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"8651\" data-start=\"8626\"\u003e\n\u003cp data-end=\"8651\" data-start=\"8628\"\u003eAvoid wild collection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"8718\" data-start=\"8654\"\u003e\n\u003cp data-end=\"8718\" data-start=\"8656\"\u003eObserve responsibly and never remove individuals from nature\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"8723\" data-start=\"8720\"\u003e\n\u003ch2 data-end=\"8770\" data-start=\"8725\"\u003eXI. Summary: Who Should Keep This Species?\u003c\/h2\u003e\n\u003cp data-end=\"8842\" data-start=\"8772\"\u003eThe Broad-headed Hillstream Loach is not a “utility fish,” but rather:\u003c\/p\u003e\n\u003cul data-end=\"8985\" data-start=\"8844\"\u003e\n\u003cli data-end=\"8897\" data-start=\"8844\"\u003e\n\u003cp data-end=\"8897\" data-start=\"8846\"\u003eA living ambassador of mountain stream ecosystems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"8937\" data-start=\"8898\"\u003e\n\u003cp data-end=\"8937\" data-start=\"8900\"\u003eA silent indicator of water quality\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"8985\" data-start=\"8938\"\u003e\n\u003cp data-end=\"8985\" data-start=\"8940\"\u003eA low-key yet striking purple-winged dancer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"9093\" data-start=\"8987\"\u003eIt does not demand roaring torrents—but it does ask for \u003cstrong data-end=\"9092\" data-start=\"9043\"\u003ecool, clean water and stones it can call home\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Eira Aquatics","offers":[{"title":"Default Title","offer_id":46327440146621,"sku":null,"price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7181\/5869\/files\/ezgif-frame-043_e38cc040-ebf9-4ded-9f67-803406c0414c.png?v=1769837811","url":"https:\/\/eiraaquatics.com\/products\/broad-headed-hillstream-loach-purple-finned-hillstream-loach","provider":"Eira Aquatics","version":"1.0","type":"link"}