Taenianotus triacanthus or leaf scorpion fish colours.

These two guys are from our area, South east Queensland, caught by myself and Danny.
These fish will revert back to a not so pretty brown and grey combo, these colours are only to blend in with what they are near.
Very easy to keep marine life, though anything like fish or shrimp that will fit in their mouth, and they have a huge mouth, will disappear, in time.