Silver arowana or dragon fish (Osteoglossum bicirrhosum) is a tropical freshwater fish of Osteoglossidae family.
It’s a popular tank fish, which is often kept in zoos, public and amateur tanks around the world.
Aquarium fishes: Monster fishes
Pacu fish (Colossoma macropomum)
Pacu fish or tambaqui (Colossoma macropomum) – is one of piranha family known for its lust for blood. But unlike its “cousins” and despite a strong and massive body, colossoma prefers plant food and belongs to herbivorous class.
There are a lot of different fishes with pacu name, however quite often their classification is rather confusing. Black pacu is an interesting, not demanding and easy in care and feed fish, which has its kind of intelligence. Sounds like an ideal aquarium fish, doesn’t it?
