The recommended stocking density for parrotfish is that for every 1 centimeter of the fish's length, there should be 1 liter of water. This means that a fish about 10 centimeters long can be raised in 10 liters of water. For example, an aquarium with a length of 1 meter, a width of 80 centimeters and a height of 70 centimeters has a water volume of 560 liters. If you are raising 10-centimeter-long parrotfish, then you can keep 56 of them.
Parrotfish belong to the family Labridae in the order Perciformes of the class Actinopterygii. They mainly live in the tropical and subtropical marine waters, and are distributed in the Western Pacific Ocean, the Ryukyu Islands, the Western Indian Ocean, the Red Sea and other areas. They inhabit the mixed areas of reefs and sand, and are carnivorous fish that feed on small benthic animals and can even eat poisonous food. Parrotfish cannot reproduce among themselves. Most of them are hybrids of the Red Devil Cichlid and the Purple Thick-lipped Cichlid, so male parrotfish do not have reproductive abilities.
When raising parrotfish, attention should be paid to their ecological environment and food selection. Parrotfish play an important role in the coral reef ecosystem because they excrete sand, which helps maintain the coral reef ecosystem. In addition, although some of the food of parrotfish is poisonous, parrotfish have organs in their bodies that can break down and digest toxins, so they will not be harmed by the toxins. However, if the toxins in the captured parrotfish are not completely removed, the toxins in their food may be passed on to humans.