Fin's Fish Guide
The Blackfin pupfish (Cyprinodon beltrani) is a freshwater fish of the family Cyprinodontidae that grows up to 5 cm.
Description
The Blackfin pupfish is a desert pupfish (Cyprinodontidae) from springs, streams and salt lakes of Lake Chichancanab on Yucatan in Mexico. The species grows to about 5 cm and has a stocky, high-backed body; males colour up steel-blue in the breeding season, females are brown-grey with spots. It is remarkably tolerant of extremely warm, salty or oxygen-poor water and snaps at algae, small invertebrates and detritus. Many species have an extremely small range and are endangered. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Blackfin pupfish?
The Blackfin pupfish has an elongate, eel-like body and is mainly blue.
Where does the Blackfin pupfish live?
The Blackfin pupfish lives in fresh water and is mostly found around open water. North America: Mexico
How big does the Blackfin pupfish get?
The Blackfin pupfish grows to a maximum of about 5 cm.
Is the Blackfin pupfish dangerous to humans?
No, the Blackfin pupfish is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Cyprinodon
More from the family Cyprinodontidae
Want the complete picture on the Blackfin pupfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Blackfin pupfish is one of 12,519 species in the app.