Pseudalutarius nasicornis (male)

Pseudalutarius nasicornis, commonly known as the Rhinoceros leatherjacket, is a medium-sized filefish. This really is a filefish for someone looking for something different than the usual options. With the dorsal spine placed in front of the eyes and the body shape iwhich looks more like that of a Naso, this certainly is not the first thing that comes to mind when thinking of a filefish.

Although filefishes are omnivores, they are often bought because they eat aiptasia. Although this is might be the case, some individuals refuse to eat this. On the other hand, they're known to pick on coral polyps and their tissue and this might be an important part of their diet in nature. So these fishes are always a bit of a risk with corals. They are very friendly to other fish except their own genus though.