Brazilian Astyanax
NameBrazilian Astyanax
Scientific NameAstyanax bimaculatus
Common NamesTwo-spot Astyanax, Yellowfin Astyanax, Brazilian Astyanax
FamilyCharacidae
OriginSouth America, Amazon Basin, Paraná River Basin, Orinoco River Basin, Coastal rivers of Brazil
Temperamentsemi-aggressive
Dietomnivore
Care Levelintermediate
Minimum Tank Size (Gallons)40
Max Size (Inches)8
Water TypeFreshwater
Temperature Range (°F)72-82
pH Range6.0-7.5
Compatible SpeciesLarger, robust tetras, Medium-sized South American cichlids (e.g., Geophagus species), Larger peaceful catfishes (e.g., Plecos, Corydoras species), Dwarf Cichlids (with caution)
Description
The Brazilian Astyanax, also known as the Two-spot or Yellowfin Astyanax, is a robust characin native to various South American river systems. It features a silvery body with prominent scales, a distinct dark humeral spot, and often yellow fins, particularly the caudal and anal fins. This species can be semi-aggressive, especially if not kept in a sufficiently large group or tank.
