Oreichthys parvus Smith, 1933
photo by Baird, I.G.

Family:  Cyprinidae (Minnows or carps), subfamily: Smiliogastrinae
Max. size:  3 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: southeastern Thailand, northern Malay Peninsula and Mekong basin in Laos and Thailand.
Diagnosis:  Numerous conspicuous rows of pores on the head; an incomplete lateral line perforating about 6 scales; a dark crescent-shaped mark at the base of each scale; a dark blotch at the base of the caudal fin, one at the tip of the dorsal fin and one along the anterior margin of the anal fin (Ref. 27732).
Biology:  Lives in hill stream (Ref. 57235). Usually found in clear, slow-flowing water (Ref. 43281). Apparently a widely distributed species but overlooked because of its small size (Ref. 27732).
IUCN Red List Status: Data deficient (DD); Date assessed: 29 March 2011 Ref. (130435)
Threat to humans:  harmless

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