Neogastromyzon crassiobex Tan, 2006

Family:  Gastromyzontidae (Hillstream loaches)
Max. size:  4.87 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: Kinabatangan River basin in Sabah, Malaysia and Sebuku River basin in Kalimantan Timur, Indonesia.
Diagnosis:  Dorsal soft rays (total): 7-8; Anal soft rays: 5-6. Can be distinguished from its congeners by possessing the following unique combination of characters: body dark brown, dorsum with 7 thick cream bars, side with complete bars, head dorsum brown with thick cream reticulate pattern; absence of secondary rostrum; absence of sublacrymal groove; presence of shallow postoral pouch; presence of subopercular groove; gill slit slanted, gill opening above 4th pectoral branched fin ray; pectoral fin origin level after eye; an elongate rounded snout when viewed dorsally; abdomen without scales; lateral line with 68-78 scales; pectoral fin not overlapping anterior of pelvic fin; pelvic fin not overlapping anal fin origin, adpressed dorsal fin not overlapping level of anal fin origin (Ref. 57871).
Biology: 
IUCN Red List Status: Near Threatened (NT); Date assessed: 14 January 2019 (B1ab(i,iii)) Ref. (130435)
Threat to humans:  harmless


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