Geophagus sveni
Geophagus sveni is a Geophagini cichlid native to the Tocantins River drainage in Brazil. Geophagus sveni is a medium-sized cichlid that reaches approximately in standard length, and is usually found in the Tocantins River basin. Similarly, Geophagus sveni has a typical teleost encephalon, without significant intraspecific variation and hence without dimorphic traits.