Crenicichla vaillanti
Crenicichla vaillanti is a species of cichlid native to South America. It is found in the Essequibo and Mana River basins. This species reaches a length of . The fish is named in honor of Pellegrin’s mentor and boss, Léon Vaillant (1834-1914) a zoologist at the Muséum national d’Histoire naturelle in Paris. References

Kullander, S.O., 2003. Cichlidae (Cichlids). p. 605-654. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. vaillanti
Taxa named by Jacques Pellegrin
Fish described in 1904