glass catfish

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Kryptopterus vitreolus, known in the aquarium trade traditionally as the glass catfish and alternatively also as the ghost catfish or phantom catfish, is a small species of Asian glass catfish. It is commonly seen in the freshwater aquarium trade, but its taxonomy is confusing and was only fully resolved in 2013. It is endemic to Thailand, where found in rivers south of the Isthmus of Kra that drain into the Gulf of Thailand and river basins in the Cardamom Mountains. There are also unconfirmed reports from Penang in Malaysia.

Until 1989, it was considered to be the same as the “glass catfish” Kryptopterus bicirrhis, a larger species infrequently seen in the aquarium trade. Subsequently the ghost catfish commonly seen in the aquarium trade was believed to be the same as K. minor, but in 2013 it was established that the aquarium specimens actually represented another species, which was described as K. vitreolus. The true K. minor, which is restricted to Borneo, has rarely (if ever) entered the aquarium trade. source

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