Ornamental Pacu

Colossoma macropomum relatives used as ornamental Pacu are members of the Serrasalmidae family and are among the largest characins kept in aquariums. Their deep, disc-like silver body with dark markings makes them visually impressive, but they can grow very large and require enormous aquariums or pond systems to thrive long-term. A responsible purchase only for keepers with the facilities to accommodate their full adult size.

Water: 22–28°C, pH 6.0–7.5, soft to moderately hard. Tank: 500 L+ minimum as adults; very strong filtration; avoid plants and decorations that can be destroyed. Feeding: Primarily herbivorous — fruits, vegetables, soaked pellets, nuts; supplement with protein. Behaviour: Generally peaceful despite size; can be kept in groups; may consume plants and decor. Compatibility: Only other very large robust fish such as large catfish and cichlids in huge systems.