Breca and Similar Species
Gymnocharacinus bergii
Got a photo? Identify fish instantly with the Fishby app.
Open the appSeveral fish can be confused with Breca. Here are the key differences.
Species often confused with {name}
Other Characins
Various Characidae species
Key differences: Most other characins possess scales. While some characins may have reduced squamation, Gymnocharacinus bergii is unique in its complete absence of scales. Its specific thermal spring habitat also distinguishes it from most other characin species.
Blind Cave Characin
Astyanax mexicanus (cave forms)
Key differences: While some cave-dwelling characins (like certain forms of Astyanax mexicanus) can exhibit reduced pigmentation and eye development, they typically retain some scales or scale pockets, and their habitat is subterranean caves, not open thermal springs. Gymnocharacinus bergii has well-developed eyes and pigmentation, despite its 'naked' appearance.
Explore Breca
Identify fish anywhere
Free on iOS, Android, and Web. Photo identification, full species details, and more.