| Family: |
Gastromyzontidae (Hillstream loaches) |
| Max. size: |
5.07 cm SL (male/unsexed) |
| Environment: |
demersal; freshwater |
| Distribution: |
Asia: River Pako in Vietnam. |
| Diagnosis: |
Vertebrae: 35-35. Absence of dark stripes on body; absence of concentric bands on paired fins. Pelvic fin reaching 5-40% of distance between anus and anal-fin origin. No cavity around the mouth, skin-fold between oropectoral membrane and ventral surface of head running from pectoral-fin origin to second rostral barbel. Tubercles on dorsal part of head concentrated on tip of snout; 15-21 large tubercles on branched pectoral-fin rays. General appearance elongated. Lateral line with 58-64 scales (Ref. 40433).
Description: dorsal fin with 3 simple and 8 branched rays; anal fin with 2 simple and 4 branched rays; pectoral fin with 1 simple and 23-24 branched rays; pelvic fin with 1 simple and 19-20 branched rays (Ref. 40433). |
| Biology: |
Very rheophilous, caught in only in rapids with current velocity exceeding 1 m/sec together with other rheophilous fish such as species of Garra, Annamia, Hemimyzon, Homaloptera, Schistura and Nemacheilus. Feeds on aquatic invertebrates (Ref. 40433). |
| IUCN Red List Status: |
Critically Endangered (CR); Date assessed: 04 September 2010 (A2ac) Ref. (130435)
|
| Threat to humans: |
harmless |
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