Tropical Fish Welfare in Aquariums

Tropical freshwater fish including cichlids, tetras, and bettas have complex social and environmental needs that standard aquarium keeping frequently fails to meet.

Key Facts

Bettas (Siamese fighting fish) are commonly sold in cups with minimal water — inadequate welfare
Male bettas cannot cohabit but do need enriched environments, not bare bowls
Many schooling fish are kept in groups too small for their social needs
Water quality parameters including pH, hardness, and temperature are species-specific
Cichlids require territory, hiding places, and appropriate substrate for welfare

Welfare Considerations

Tropical aquarium fish welfare failures are pervasive and normalised: bettas in cups at store checkout areas, angelfish alone in bare tanks, tetras in groups of two. These animals have specific social, environmental, and physiological requirements that bare fishbowl or small community tank keeping routinely violates. The welfare harm accumulates daily in millions of aquariums worldwide. Accessible, species-specific care information and point-of-sale welfare guidance would prevent the majority of these preventable welfare failures.

What You Can Do

Research specific welfare requirements before purchasing any tropical fish
Keep schooling fish in appropriate minimum group sizes
Provide appropriate environmental complexity including hiding places and substrate
Test water quality weekly and maintain species-appropriate parameters
Advocate for welfare information requirements at point of aquarium fish sale