Gastromyzon ocellatus Tan & Ng, 2004
Gastromyzon ocellatus
photo by JJPhoto

Family:  Gastromyzontidae (Hillstream loaches)
Max. size:  4.53 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: southern Sarawak, Malaysia.
Diagnosis:  Dorsal soft rays (total): 8-9; Anal soft rays: 5-5; Vertebrae: 30-31. Distinguished from its congeners in having the following unique combination of characters: body dark brown, dorsum with 7-8 cream bars, side with bars complete or interrupted to form an ocellus pattern, head dorsum dark brown with cream spots and blotches; caudal fin red when live; lack of secondary rostrum; lack of a postoral pouch; gill slit angular, subopercular groove present and continuous to pectoral fin origin; a rounded snout when viewed dorsally; presence of sublacrimal groove; abdomen without scales; 56-61 scales on lateral line; pelvic fin not overlapping anal fin origin, adpressed dorsal fin not overlapping anal fin origin (Ref. 55025).
Biology:  Inhabits fast flowing rocky streams (Ref. 84801). Syntopic with Gastromyzon ctenocephalus (Ref. 55025).
IUCN Red List Status: Near Threatened (NT); Date assessed: 31 December 2018 (B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)) Ref. (130435)
Threat to humans:  harmless


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