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Sewellia diardi Roberts, 1998 |
| Family: | Gastromyzontidae (Hillstream loaches) | |||
| Max. size: | 7.18 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | Asia: Se Kong watershed, the southern-most large tributary of Mekong in Laos. | |||
| Diagnosis: | Vertebrae: 35-36. Differs from members of the genus by the following combination of characters: absence of dark stripes on body; absence of bold concentric bands on posterior part of paired fins; pelvic fin not reaching anal-fin origin; general appearance robust, body width at dorsal-fin origin 24.2-28.0% SL; caudal peduncle depth 10.7-11.2% SL; caudal peduncle length 0.8-0.9 times in its depth; predorsal body length 51.3-53.7% SL; pelvic-fin origin in front of dorsal-fin origin; absence of cavity around 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 lateral part of snout; absence of large tubercles on branched pectoral-fin rays 15-21; and 60-70 lateral line scales (Ref. 40433). | |||
| Biology: | Inhabits hill streams. Occurs sympatrically with S. speciosa. | |||
| IUCN Red List Status: | Data deficient (DD); Date assessed: 19 February 2011 Ref. (130435) | |||
| Threat to humans: | harmless | |||