Hypostomus watwata Hancock, 1828
hypostomus demerarský
Hancock, J. 1828. Notes on some species of fishes and reptiles, from Demerara, presented to the Zoological Society by John Hancock, Esq., corr. memb. Zool. Soc. In a letter addressed to the secretary of the Society. Zool. J. v. 4: 240-247.