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Sewellia albisuera Freyhof, 2003 |
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photo by
Freyhof, J. |
| Family: | Gastromyzontidae (Hillstream loaches) | |||
| Max. size: | 6.4 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | Asia: Viet Nam. | |||
| Diagnosis: | Dorsal soft rays (total): 11-11; Anal soft rays: 6-6; Vertebrae: 31-32. Dorsum of head, body and paired fin bases with whitish reticulated or whitish spotted pattern; faint dark grey axial stripe covering three scale rows; skin around lateral line pores whitish; posterior part of pectoral fin with 5-7 faint annular bands; 20-21 branched pelvic fin rays; 49-54+2 lateral line scales; pelvic fin origin below dorsal fin origin; pectoral fin origin posterior to corner of mouth; pelvic fin reaching anal fin origin; small soft elevated patches of fine tubercles on first pectoral fin rays in males; tubercles on simple pectoral fin ray not enlarged; absence of cavity around mouth and absence of skin-fold between oropectoral membrane and ventral surface of head (Ref. 51729). | |||
| Biology: | Inhabits rocky rapids and deep pools over sandy substrates. Also found in rocky pools isolated from the main river. | |||
| IUCN Red List Status: | Critically Endangered (CR); Date assessed: 04 September 2010 (A2c+3c; B1b(i,ii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||