Oreichthys is a genus of tropical barbs found in Thailand, India, Bangladesh, Myanmar (Burma), northern Malay Peninsula, and the Mekong basin in Laos. They are found in ditches, ponds, streams (both highland and lowland) and canals.Rahman, A.K.A. (1989): Freshwater fishes of Bangladesh. Zoological Society of Bangladesh. Department of Zoology, University of Dhaka. 364 p. The genus Oreichthys (Smith 1933) was originally established to receive little fish collected in a small brook on Kao Sabap, an extensive mountain range near Chantaburi, Thailand.The Freshwater fishes of Siam, or Thailand by Hugh M. Smith. United States National Museum Bulletin 188. 1945
Species These are the currently recognized species in this genus: Oreichthys andrewi Knight, 2014 Oreichthys coorgensis (Jayaram, 1982) Oreichthys cosuatis (Hamilton, 1822) Oreichthys crenuchoides Schäfer, 2009 Oreichthys duospilus Knight & Kumar, 2015 Oreichthys elianae Oreichthys incognito Knight & Kumar, 2015 Oreichthys parvus H. M. Smith, 1933 Oreichthys warjaintia Dann, Dahanukar & Raghavan, 2024
Physical description All Oreichthys, with the exception of O. crenuchoides, possess a triangular-looking body, with the face being pointed. In O. crenuchoides, the body and face are more rounded. The last simple dorsal ray is flexible and smooth. Scale count is 23 in the lengthwise series and 7 in the transverse series. The tube-bearing scales of the lateral line are restricted to the first 6 or 7 scales anteriorly. The head is marked by numerous fine rows of pores, mostly in parallel groups on the snout, cheeks, interorbital space, and operuclar bones. Barbels are absent.
Distribution Thailand, India, Bangladesh, Myanmar (Burma), northern Malay Peninsula, and the Mekong basin in Laos.
Habitat Oreichthys are found in ditches, ponds, streams (both highland and lowland) and canals.
Aquarium Maintenance All Oreichthys species are easily maintained in aquaria. They are generally peaceful towards conspecifics and tankmates, even where the other fish may be smaller than they are. They appear to prefer cooler water temperatures, with 76 °F appearing to be the short-term upper limit unless auxiliary aeration is provided. They will feed on flake food, micro-pellets, frozen bloodworms, frozen mysis shrimp, and gelatin diet. All in all they are not fussy feeders, and adapt readily to captivity. pH should range from neutral to slightly alkaline with moderate water hardness.
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