Hollandi Piranha

Serrasalmus hollandi is endemic to the Rio São Francisco in Brazil, sharing that drainage with S. brandtii and Pygocentrus piraya. It displays fine dark spotting on a silver body and a notably large eye that lends it an intelligent, inquisitive expression — a feature highly regarded by collector keepers.

As a São Francisco endemic, it likely benefits from the slightly harder, more mineral-rich conditions of that drainage compared to typical Amazonian piranhas. This may make it marginally more forgiving of neutral water conditions. It is rarely imported and commands specialist collector prices.

Piranha restrictions apply; São Francisco endemics may have additional Brazilian export regulations.

Water: 22-28°C, pH 6.0-7.5, soft to moderately hard; São Francisco origin means harder water than Amazonian species is better tolerated. Tank: Minimum 400L for a single adult; root or cave structure; secure lid; strong filtration. Feeding: Carnivore; whole prawns, fish fillet, silversides; feed every 2-3 days; tongs required. Breeding: No captive records. Compatibility: Solo housing only; verify legal acquisition status — Brazilian export of São Francisco endemics may be regulated.