Sewellia breviventralis Freyhof & Serov, 2000
photo by Germeau, G.

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. (124695)
Threat to humans:  harmless
Country info:   

Entered by: Capuli, Estelita Emily - 26.10.01
Modified by: Bailly, Nicolas - 31.10.12

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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