River
San Martin
2 profiles across 1 family name the San Martin as a locality.
- Species
- 2
- Families
- 1
- Photographed
- 2 of 2
- Difficulty rated
- 2 of 2
Basin
Also in the Amazon basinspecies recorded from both
Shares fishes with rivers elsewherespecies recorded from both
Runs through

Geophagus megasema
Cichlidae · Heckel, 1840
This species is very rare in the aquarium hobby and may never have been available on a commercial basis although it has been collected, bred and distributed by some private collectors. It's a member of the putative G. surinamensis 'group' of closely-related species within the genus and ca...

Satanoperca pappaterraPantanal Eartheater
Cichlidae · Heckel, 1840
S. pappaterra is relatively rare in the ornamental trade and much sought after by enthusiasts. It is easily distinguished from all known congeners by presence of a series of prominent black blotches beneath the dorsal-fin, plus a well-defined dark band extending along the side of the body. In recent genetic analyses its genetic distinctness was strongly supported, with S. jurupari and S. leucosticta its closest relatives.