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Biotecus opercularis.jpg
B. opercularis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Cichlidae
Subfamily: Geophaginae
Genus: Biotoecus
Type species
Saraca opercularis
Steindachner, 1875

Biotoecus is a fish genus of cichlids from northern South America where one species (B. dicentrarchus) is found in the Orinoco Basin and the other (B. opercularis) occurs in the northern part of the Amazon Basin. These small cichlids do not surpass 10 cm (3.9 in) in length.


The two recognized species in this genus are:[1]


  1. ^ Froese, Rainer, and Daniel Pauly, eds. (2013). Species of Biotoecus in FishBase. February 2013 version.