Description
Maximum sizes vary within the group, with the majority of species reaching 30–50 cm (12–20 in) in length. However, a few species reach lengths in excess of 1 m (3 ft 3 in), and the green humphead parrotfish can reach up to 1.3 m (4 ft 3 in).
We like to keep them in groups, but you can keep one blood parrot in a 30-gallon tank, three blood parrots in a 55-gallon tank, or five to six blood parrots in a 75-gallon tank. This is similar to the tank size requirements for a fancy goldfish, such that each fish needs at least 20–30 gallons of water.