Spotfin Butterfly (Atlantic)

The Spotfin butterfly is overall a shimmering white as pure as new snow, its fins and tail painted with bright lemon yellow. A black stripe runs through its eyes, and a tiny black dot marks the rear edge of its dorsal fin. In juveniles this black dot may be larger and extend down to form a stripe. It grows up to 8 inches and needs an aquarium of at least 125 gallons. In the wild it is found mainly in the Caribbean.

This species is normally quite peaceful, and should not be kept with aggressive tank mates. It can be kept singly or in pairs which should be added at the same time to a large aquarium. Butterflyfish do not show differences between males and females. They are related to angelfish, but lack the angel's distinctive cheek spines. This species has the amusing habit of occasionally swimming upside down.

A butterflyfish's favorite food is an anemone, so they should not be kept in the same aquarium with one unless it is guarded by aggressive clownfish. The butterflyfish knows to attack the anemone on its mouth, which does not sting, and will make a quick meal of it. Many species of butterfly also benefit from filamentous algae in the aquarium to graze on.

This species may nip on many types of corals, especially soft coral, clam mantles, sponges, and feather dusters. They do not typically bother other types of invertebrates such as crustaceans. They feel most secure when there is plenty of live rock to hide in, as well as open space for swimming. This species is easy to feed, but may be fussy initially. It should be offered a variety of meaty and herbivore preparations such as frozen Mysis shrimp, half shell clams, marine algae and Spirulina; it should be fed 2-3 times a day. Bloodworms or small live anemones may be used initially to entice it to feed. Soft food may also be pressed into the rock to provide grazing opportunities. Supplements such as Brightwell's Angelixer and Garlic Power may elicit a feeding response.