Sign-in to like this image
No caption available
Thanks Alyona, that was what I thought as well. A bit more research indicates it could be the male breeding colouration
Whitebar gregory - Stegastes albifasciatus, I think.
Please enter some search params to find your fish! Keywords, names or nicknames should all work!
Alternatively, if you have NO IDEA what it is, click the green button to mark as unidentified.