Rummy nose tetra (lat. Hemigrammus rhodostomus) is a fish with bright red spot on its head, its fluke has black and white stripes and the body is silvery. At that tetra is quite small fish – about 4.5 cm long, with a peaceful temper and it can be a good tank mate for any peaceful fish.
The red-bellied piranha (Pygocentrus nattereri) — is a predatory freshwater fish kind. It belongs to the piranha Serrasalmidae subfamily, which is one of the most well-known kinds of piranha. Due to Hollywood films, it is famous as a bloodthirsty predator, but are piranha really that dangerous? Further in the article, you’ll find information about their habitat, how they hunt, how to keep the fish in a tank, and if it is possible to keep piranha together with other tank dwellers.
The pacu fish (Colossoma macropomum) is a freshwater fish species native to South America. Due to their unique appearance, pacu fish are sometimes kept in large home aquariums or public aquarium displays. However, their large size and specific care requirements mean they are not suitable for most aquarium setups. Pacus need ample space, clean water, and a diet that meets their nutritional needs.