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Gastromyzon umbrus Tan, 2006 |
| Family: | Gastromyzontidae (Hillstream loaches) | |||
| Max. size: | 5.07 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | Asia: Northeastern Borneo in the Kalabakan and Sebuku River basins. | |||
| Diagnosis: | Dorsal soft rays (total): 8-8; Anal soft rays: 5-5; Vertebrae: 29-30. Can be distinguished from other species of the genus by possessing the following unique combination of characters: gill slit angular; subopercular groove present and continuous to pectoral fin origin; body dark brown; head dorsum dark brown; sublacrymal groove present; a rounded snout when viewed dorsally; secondary rostrum absent; post-oral pouch absent; abdomen without scales; lateral line scales 50-52; pelvic fin overlapping anal fin origin, adpressed dorsal fin overlapping level of anal fin origin (Ref. 57871). | |||
| Biology: | ||||
| IUCN Red List Status: | Near Threatened (NT); Date assessed: 01 January 2019 (B1ab(i,ii,iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||