| Nemacheilidae (Brook loaches) |
| 8.4 cm TL (male/unsexed); max.weight: 4.8 g |
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benthopelagic; freshwater |
| Asia: Tigris and Euphrates river basins (Ref. 31729). |
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This species is distinguished from O. ercisianus, O. hazarensis, O. kaynaki by possessing a long and high dorsal adipose crest with a whitish margin, reaching beyond the vertical through the anal-fin origin, often below the last dorsal-fin rays when folded down (vs. absence or with a short dorsal-adipose crest, without white margin, on the caudal peduncle not reaching to the vertical through the anal-fin base); with 10-16 bold, narrow, regularly shaped bars, very distinct on the caudal peduncle (vs. a mottled or marmorate flank pattern or the flank with large, irregularly shaped and narrowly spaced dark-brown bars or blotches); most individuals with two bold, black spots at the caudal-fin base (vs. no spots); many isolated, deeply embedded scales on the flank (vs. scales absent in O. ercisianus, scales confined to the caudal peduncle in O. hazarensis)(Ref. 120397). |
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Critically Endangered (CR); Date assessed: 15 January 2013 (B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)) Ref. (130435)
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| harmless |
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