Here's a little info taken from one of my books for ya!
Coral cats-Plotosus lineatus- grows to about 13". Solitary cats tend to be very shy and reclusive. If kept in a small group they will usually swim about in the open in a school-especially when young.
Their spines are extremely poisonous, so, handle with care-or better yet, don't handle at all! Trap 'em or hook 'em if you gotta move 'em! I don't have any info on feeding, but, just guessing from the photo of the fish, I'd say they probably feed on small mobil inverts-shrimp, crabs, also, small fish. If you have the space for them, they should make good additions to a fish only community or a reef as long as you don't keep anything they could eat.

HTH
