Hypostomus derbyi[1] is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Iguazu River and the Urugua-í River, which are both tributaries of the Paraná River. The species reaches 31 cm (12.2 inches) in standard length and is believed to be a facultative air-breather.[2]
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Dorsal view of the type specimen of H. derbyi. 
Ventral view of the type specimen of H. derbyi. Hypostomus derbyi is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Iguazu River and the Urugua-í River, which are both tributaries of the Paraná River. The species reaches 31 cm (12.2 inches) in standard length and is believed to be a facultative air-breather.
