ITS–The Redfin Butterflyfish (Chaetodon trifasciatus) has an oval-shaped, slender body and a pointed snout. On its head are three black vertical stripes which are covered by bright horizontal stripes and a dark coloured caudal fin.
The male and female of this species can be distinguished by the colour of the front part of the anal fin; a pink colour indicates a female and a red colour, a male. In its natural habitat, the Redfin Butterflyfish feeds on live corals. The species is commonly found in many aquariums and grows to between four and six inches. It is known to be a peaceful fish which enjoys spending time in large holes in coral so it can feel secure.