Butterflyfish can be a challenging but rewarding species for the experienced aquarist. These beautiful fish can obtain an adult size of anywhere from 3-9" depending on species, so a minimum of 50 gallons or larger is needed. Butterflyfish are shy and peaceful and will swim in pairs or schools in a large enough aquarium, however they may be aggressive with other butterflyfish. Despite being peaceful, these fish should be avoided in a reef tank as they do enjoy eating coral and may even nip at other invertebrates such as tubeworms and sea urchins as well.
Frequently Asked Questions About Saltwater Angelfish