The rope fish (Erpetoichthys calabaricus), is a species of freshwater fish in the bichir family, popular aquarium fish. It is interesting to watch reed fish in a tank, easy to keep it but you should bare in mind that its tank mates must be average or large sized. Rope fish takes smaller fish species as a food, since it is a predator by its nature.
Black ghost knife fish (Apteronotus albifrons) is one of the most unusual freshwater fishes that you may encounter in amateur aquariums. The fish has nocturnal habits. During the day time it is rather timid and quite often stays in a shelter on a tank bottom. Black ghost knife fish are popular among aquarium hobbyists due to their unique appearance and behavior. However, they require specific care to thrive in captivity. They need a large aquarium with plenty of hiding places and a sandy substrate. Additionally, they are sensitive to water quality and require regular maintenance and proper filtration.
Silver arowana (lat. Osteoglossum bicirrhosum) is a tropical freshwater fish of the Osteoglossidae family. Osteoglossidae genus appeared during the Jurassic period and hasn’t changed much during the last 150 million years. It’s a popular tank fish, which is often kept in zoos, public and amateur tanks around the world. In the East countries, it is a symbol of wealth and prosperity. Some fish species can rich dozen thousand dollars.
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.