Bighead Pupfish
NameBighead Pupfish
Scientific NameCyprinodon pachycephalus
Common NamesBighead Pupfish
FamilyCyprinodontidae
OriginCuatro Ciénegas Basin, Coahuila, Mexico
Temperamentsemi-aggressive
Dietomnivore
Care Levelintermediate
Minimum Tank Size (Gallons)20
Max Size (Inches)2
Water TypeFreshwater
Temperature Range (°F)72-82
pH Range7.5-8.5
Compatible SpeciesSpecies-only tank
Description
The Bighead Pupfish is a small, hardy freshwater fish endemic to the unique Cuatro Ciénegas Basin in Mexico. Known for its relatively large head, it thrives in warm, alkaline spring waters, feeding on detritus and small invertebrates. Males can be territorial, especially during breeding.
