- Red Belly Piranhas -The most popular choice for aquariums, these colourful fish are highly active when hunting but otherwise shy and quiet.
- Black Piranhas -These highly aggressive fish should be kept alone in an aquarium with a secure hood to prevent them from escaping when jumping. They have been known to bite through plastic aquarium equipment.
- White Piranhas -These large fish prefer an entirely fish based diet and need an aquarium with subdued lighting and lots of hiding places.
- Gold Piranhas -Also known as black diamond piranhas, these exotic looking fish are among the small piranha species but are highly aggressive and should be kept alone.
- Wimple Piranhas -These small, distinctively shaped fish can usually be kept in shoals. They may appear placid but they can strike extremely fast.
Breeding PiranhasBreeding piranhas in captivity is notoriously difficult, since many will tear each other apart on sight, but if you do manage to find a compatible pair you'll discover that they need very little help. Supply them with loose stones, plants and bits of driftwood and they'll build a nest in which to lay their eggs, which take two to three days to hatch.
The male will be primarily responsible for guarding the fry, and he'll be even more aggressive than usual when doing so, so be careful around him. The fry can be fed on small live brine shrimp.