saw these guys at my lfs for 2 bucks a piece. couldnt help myself so i picked up four. i have no idea what they are but theyre currently feeding on live tubifex. any help would be greatly appreciated. sorry about the quality of the pics they were the best i could do.
I believe those are butterfly gobies, Vespicula depressifrons. Not really a goby, but a neat fish none the less. Just watch teh dorsal spines as I hear they have a mild venom in them that can be quite painful.