|
Gastromyzon russulus Tan, 2006 |
| Family: | Gastromyzontidae (Hillstream loaches) | |||
| Max. size: | 6.43 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | Asia: Kayan and Mahakam River basins in Kalimantan Timur, Indonesia. | |||
| Diagnosis: | Dorsal soft rays (total): 9-9; Anal soft rays: 5-5; Vertebrae: 31-32. Can be distinguished from its congeners by possessing the following unique combination of characters: body plain dark brown or black in adults, body brown with numerous thin cream bars and blotches in juveniles; head dorsum dark brown with cream reticulate pattern; all fins reddish when alive; absence of secondary rostrum; absence of a postoral pouch; gill slit angular, subopercular groove present and continuous to pectoral fin origin; a rounded and elongate snout when viewed dorsally; presence of sublacrymal groove; abdomen without scales; lateral line with 64-71 scales; pelvic fin just touching anal fin origin, adpressed dorsal fin not overlapping level of anal fin origin (Ref. 57871). | |||
| Biology: | ||||
| IUCN Red List Status: | Least Concern (LC); Date assessed: 11 January 2019 Ref. (130435) | |||
| Threat to humans: | harmless | |||