{"product_id":"yunnanilus-pulcherrimus-species-overview","title":"Yunnanilus pulcherrimus Species Overview","description":"\u003ch2 data-start=\"593\" data-end=\"636\"\u003eI. Taxonomic Status and General Overview\u003c\/h2\u003e\n\u003cp data-start=\"638\" data-end=\"771\"\u003e\u003cstrong data-start=\"638\" data-end=\"666\"\u003eOrder: Cypriniformes\u003cbr\u003eFamily: Nemacheilidae\u003cbr\u003eGenus: Yunnanilus\u003cbr\u003eScientific Name: Yunnanilus pulcherrimus\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"638\" data-end=\"771\"\u003e\u003cstrong data-start=\"638\" data-end=\"666\"\u003e\u003cem data-start=\"394\" data-end=\"420\"\u003e← Back to \u003ca href=\"https:\/\/eiraaquatics.com\/collections\/loach\"\u003e\u003cstrong\u003e\u003cem data-start=\"1121\" data-end=\"1140\"\u003eLoach\u003c\/em\u003e\u003c\/strong\u003e\u003c\/a\u003e (genus overview)\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"638\" data-end=\"771\"\u003e\u003cstrong data-start=\"638\" data-end=\"666\"\u003eMicronemacheilus pulcher\u003c\/strong\u003e (synonym: \u003cem data-start=\"677\" data-end=\"702\"\u003eYunnanilus pulcherrimus\u003c\/em\u003e) is a small benthic loach belonging to the family \u003cstrong data-start=\"753\" data-end=\"770\"\u003eNemacheilidae\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"773\" data-end=\"1002\"\u003eTaxonomic literature treats these two names as heterotypic synonyms under different systematic arrangements. When referencing the species in professional or aquarium contexts, both names should be acknowledged to avoid confusion.\u003c\/p\u003e\n\u003cp data-start=\"1004\" data-end=\"1169\"\u003eThis species is valued in advanced freshwater aquaria for its structural coloration patterns and ecologically consistent behavioral expression rather than body size.\u003c\/p\u003e\n\u003chr data-start=\"1171\" data-end=\"1174\"\u003e\n\u003ch2 data-start=\"1176\" data-end=\"1224\"\u003eII. Natural Distribution and Ecological Niche\u003c\/h2\u003e\n\u003cp data-start=\"1226\" data-end=\"1287\"\u003eThe species is native to southern Chinese hillstream systems.\u003c\/p\u003e\n\u003cp data-start=\"1289\" data-end=\"1337\"\u003eTypical natural habitat characteristics include:\u003c\/p\u003e\n\u003cul data-start=\"1339\" data-end=\"1478\"\u003e\n\u003cli data-start=\"1339\" data-end=\"1352\"\u003e\n\u003cp data-start=\"1341\" data-end=\"1352\"\u003eClear water\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1353\" data-end=\"1404\"\u003e\n\u003cp data-start=\"1355\" data-end=\"1404\"\u003eModerate to moderately strong current in the wild\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1405\" data-end=\"1428\"\u003e\n\u003cp data-start=\"1407\" data-end=\"1428\"\u003eHigh dissolved oxygen\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1429\" data-end=\"1453\"\u003e\n\u003cp data-start=\"1431\" data-end=\"1453\"\u003eSandy–gravel substrate\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1454\" data-end=\"1478\"\u003e\n\u003cp data-start=\"1456\" data-end=\"1478\"\u003eAbundant rock crevices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1480\" data-end=\"1542\"\u003eEcologically, it occupies a \u003cstrong data-start=\"1508\" data-end=\"1541\"\u003ebenthic micro-predatory niche\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1544\" data-end=\"1705\"\u003eIt actively forages along rock surfaces, consuming small benthic invertebrates and biofilm. Rock structures function both as refuge and spatial boundary markers.\u003c\/p\u003e\n\u003cp data-start=\"1707\" data-end=\"1807\"\u003eIn captivity, a gentle to moderate flow is recommended to maintain stability and optimal coloration.\u003c\/p\u003e\n\u003chr data-start=\"1809\" data-end=\"1812\"\u003e\n\u003ch2 data-start=\"1814\" data-end=\"1868\"\u003eIII. Morphological and Coloration Characteristics\u003c\/h2\u003e\n\u003cp data-start=\"1869\" data-end=\"1924\"\u003e\u003cem data-start=\"1869\" data-end=\"1924\"\u003e(Core Identification Traits — unchanged as requested)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"1926\" data-end=\"1951\"\u003e1. Non-Breeding Phase\u003c\/h3\u003e\n\u003cp data-start=\"1953\" data-end=\"2028\"\u003eThe body displays a longitudinal gray-brown band running along the midline.\u003c\/p\u003e\n\u003cp data-start=\"2030\" data-end=\"2123\"\u003eThis band carries a subtle green undertone and extends from the snout to the caudal peduncle.\u003c\/p\u003e\n\u003cp data-start=\"2125\" data-end=\"2209\"\u003eThe dorsal region features irregular darker striping that continues toward the tail.\u003c\/p\u003e\n\u003cp data-start=\"2211\" data-end=\"2253\"\u003eThe caudal fin bears two horizontal bands:\u003c\/p\u003e\n\u003cul data-start=\"2255\" data-end=\"2363\"\u003e\n\u003cli data-start=\"2255\" data-end=\"2311\"\u003e\n\u003cp data-start=\"2257\" data-end=\"2311\"\u003eThe upper band connects visually with dorsal striping.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2312\" data-end=\"2363\"\u003e\n\u003cp data-start=\"2314\" data-end=\"2363\"\u003eThe lower band aligns with the central body band.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2365\" data-end=\"2430\"\u003eThis creates a bifurcated structural visual flow toward the tail.\u003c\/p\u003e\n\u003cp data-start=\"2432\" data-end=\"2496\"\u003eColoration at this stage is restrained but structurally defined.\u003c\/p\u003e\n\u003chr data-start=\"2498\" data-end=\"2501\"\u003e\n\u003ch3 data-start=\"2503\" data-end=\"2534\"\u003e2. Breeding \/ Display Phase\u003c\/h3\u003e\n\u003cp data-start=\"2536\" data-end=\"2588\"\u003eUpon sexual maturity or during reproductive display:\u003c\/p\u003e\n\u003cul data-start=\"2590\" data-end=\"2780\"\u003e\n\u003cli data-start=\"2590\" data-end=\"2673\"\u003e\n\u003cp data-start=\"2592\" data-end=\"2673\"\u003eThe central gray-brown band transforms into a distinct green longitudinal stripe.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2674\" data-end=\"2745\"\u003e\n\u003cp data-start=\"2676\" data-end=\"2745\"\u003eAll fins develop a red tone, ranging from bright red to deep crimson.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2746\" data-end=\"2780\"\u003e\n\u003cp data-start=\"2748\" data-end=\"2780\"\u003eSaturation increases noticeably.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2782\" data-end=\"2901\"\u003eThe areas above and below the green stripe transition from gray to reddish hues, forming a layered chromatic structure.\u003c\/p\u003e\n\u003cp data-start=\"2903\" data-end=\"2987\"\u003eThis represents a structural color shift rather than simple pigment intensification.\u003c\/p\u003e\n\u003chr data-start=\"2989\" data-end=\"2992\"\u003e\n\u003ch2 data-start=\"2994\" data-end=\"3027\"\u003eIV. Behavioral Characteristics\u003c\/h2\u003e\n\u003cp data-start=\"3029\" data-end=\"3047\"\u003eBehavior includes:\u003c\/p\u003e\n\u003cul data-start=\"3049\" data-end=\"3160\"\u003e\n\u003cli data-start=\"3049\" data-end=\"3067\"\u003e\n\u003cp data-start=\"3051\" data-end=\"3067\"\u003eBenthic cruising\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3068\" data-end=\"3088\"\u003e\n\u003cp data-start=\"3070\" data-end=\"3088\"\u003eCrevice occupation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3089\" data-end=\"3136\"\u003e\n\u003cp data-start=\"3091\" data-end=\"3136\"\u003eMicro-territorial behavior among mature males\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3137\" data-end=\"3160\"\u003e\n\u003cp data-start=\"3139\" data-end=\"3160\"\u003eFin display posturing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3162\" data-end=\"3248\"\u003eAggression levels remain low. Display behavior is spatial rather than confrontational.\u003c\/p\u003e\n\u003cp data-start=\"3250\" data-end=\"3319\"\u003eActivity rhythm is steady and substrate-oriented rather than erratic.\u003c\/p\u003e\n\u003chr data-start=\"3321\" data-end=\"3324\"\u003e\n\u003ch2 data-start=\"3326\" data-end=\"3377\"\u003eV. Aquarium Setup — Functional Layout Principles\u003c\/h2\u003e\n\u003cp data-start=\"3379\" data-end=\"3466\"\u003eThe aquarium should prioritize physical environmental logic over decorative aesthetics.\u003c\/p\u003e\n\u003cp data-start=\"3468\" data-end=\"3488\"\u003eRequired components:\u003c\/p\u003e\n\u003cul data-start=\"3490\" data-end=\"3718\"\u003e\n\u003cli data-start=\"3490\" data-end=\"3523\"\u003e\n\u003cp data-start=\"3492\" data-end=\"3523\"\u003eEfficient biological filtration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3524\" data-end=\"3580\"\u003e\n\u003cp data-start=\"3526\" data-end=\"3580\"\u003eWave pump or flow pump to establish structured current\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3581\" data-end=\"3611\"\u003e\n\u003cp data-start=\"3583\" data-end=\"3611\"\u003eHigh dissolved oxygen levels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3612\" data-end=\"3643\"\u003e\n\u003cp data-start=\"3614\" data-end=\"3643\"\u003eSand or fine gravel substrate\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3644\" data-end=\"3668\"\u003e\n\u003cp data-start=\"3646\" data-end=\"3668\"\u003eStable rock formations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3669\" data-end=\"3718\"\u003e\n\u003cp data-start=\"3671\" data-end=\"3718\"\u003eMultiple shaded zones and bottom-level crevices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3720\" data-end=\"3843\"\u003eThe focus should be on current structure, benthic surface area, and spatial partitioning rather than ornamental complexity.\u003c\/p\u003e\n\u003cp data-start=\"3845\" data-end=\"3916\"\u003eThis species performs best in well-designed hillstream biotope aquaria.\u003c\/p\u003e\n\u003chr data-start=\"3918\" data-end=\"3921\"\u003e\n\u003ch2 data-start=\"3923\" data-end=\"3977\"\u003eVI. Ecological Position and Community Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"3979\" data-end=\"4078\"\u003eAs a benthic micro-territorial species, it should be housed with peaceful mid- or upper-water fish.\u003c\/p\u003e\n\u003cp data-start=\"4080\" data-end=\"4101\"\u003eAvoid combining with:\u003c\/p\u003e\n\u003cul data-start=\"4103\" data-end=\"4187\"\u003e\n\u003cli data-start=\"4103\" data-end=\"4158\"\u003e\n\u003cp data-start=\"4105\" data-end=\"4158\"\u003eOther bottom-dwelling loaches with overlapping niches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4159\" data-end=\"4187\"\u003e\n\u003cp data-start=\"4161\" data-end=\"4187\"\u003eAggressive benthic species\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4189\" data-end=\"4298\"\u003eProvide sufficient rock cover and visual barriers to reduce spatial tension during coloration display phases.\u003c\/p\u003e\n\u003chr data-start=\"4300\" data-end=\"4303\"\u003e\n\u003ch2 data-start=\"4305\" data-end=\"4329\"\u003eVII. Feeding Strategy\u003c\/h2\u003e\n\u003cp data-start=\"4331\" data-end=\"4393\"\u003eDiet should emphasize small high-protein live or frozen foods:\u003c\/p\u003e\n\u003cul data-start=\"4395\" data-end=\"4463\"\u003e\n\u003cli data-start=\"4395\" data-end=\"4407\"\u003e\n\u003cp data-start=\"4397\" data-end=\"4407\"\u003eBloodworms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4408\" data-end=\"4417\"\u003e\n\u003cp data-start=\"4410\" data-end=\"4417\"\u003eDaphnia\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4418\" data-end=\"4432\"\u003e\n\u003cp data-start=\"4420\" data-end=\"4432\"\u003eBrine shrimp\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4433\" data-end=\"4463\"\u003e\n\u003cp data-start=\"4435\" data-end=\"4463\"\u003eQuality sinking micropellets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4465\" data-end=\"4513\"\u003eLight flow conditions improve feeding stability.\u003c\/p\u003e\n\u003chr data-start=\"4515\" data-end=\"4518\"\u003e\n\u003ch2 data-start=\"4520\" data-end=\"4547\"\u003eVIII. Reproductive Notes\u003c\/h2\u003e\n\u003cp data-start=\"4549\" data-end=\"4584\"\u003eColor development is influenced by:\u003c\/p\u003e\n\u003cul data-start=\"4586\" data-end=\"4683\"\u003e\n\u003cli data-start=\"4586\" data-end=\"4603\"\u003e\n\u003cp data-start=\"4588\" data-end=\"4603\"\u003eSexual maturity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4604\" data-end=\"4629\"\u003e\n\u003cp data-start=\"4606\" data-end=\"4629\"\u003eStable water conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4630\" data-end=\"4657\"\u003e\n\u003cp data-start=\"4632\" data-end=\"4657\"\u003eHigh oxygen concentration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4658\" data-end=\"4683\"\u003e\n\u003cp data-start=\"4660\" data-end=\"4683\"\u003eAdequate protein intake\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4685\" data-end=\"4781\"\u003eSpawning is presumed to occur within rock crevices. Documented captive breeding remains limited.\u003c\/p\u003e\n\u003chr data-start=\"4783\" data-end=\"4786\"\u003e\n\u003ch2 data-start=\"4788\" data-end=\"4814\"\u003eIX. Aquarist Evaluation\u003c\/h2\u003e\n\u003cp data-start=\"4816\" data-end=\"4980\"\u003eDifficulty: Moderate\u003cbr data-start=\"4836\" data-end=\"4839\"\u003eColoration potential: High\u003cbr data-start=\"4865\" data-end=\"4868\"\u003eEcological expression value: High\u003cbr data-start=\"4901\" data-end=\"4904\"\u003eBest suited for: Experienced aquarists familiar with structured flow systems\u003c\/p\u003e\n\u003chr data-start=\"4982\" data-end=\"4985\"\u003e\n\u003ch2 data-start=\"4987\" data-end=\"5000\"\u003eX. Summary\u003c\/h2\u003e\n\u003cp data-start=\"5002\" data-end=\"5125\"\u003eThe ornamental value of \u003cem data-start=\"5026\" data-end=\"5052\"\u003eMicronemacheilus pulcher\u003c\/em\u003e lies in structural color transformation rather than static pigmentation.\u003c\/p\u003e\n\u003cp data-start=\"5127\" data-end=\"5218\"\u003eUnder appropriate environmental conditions, coloration and behavior develop simultaneously.\u003c\/p\u003e\n\u003cp data-start=\"5220\" data-end=\"5320\"\u003eIt is a species whose full expression depends on ecological accuracy rather than decorative display.\u003c\/p\u003e","brand":"Eira Aquatics","offers":[{"title":"Default Title","offer_id":46410351771837,"sku":null,"price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7181\/5869\/files\/ezgif-frame-010_1a45864c-0276-43d2-bc74-863d7eea72a7.png?v=1771252988","url":"https:\/\/eiraaquatics.com\/products\/yunnanilus-pulcherrimus-species-overview","provider":"Eira Aquatics","version":"1.0","type":"link"}