I had one .. no picture though, sorry. just some info on it. if you buy it from the LFS, they probably feed it live goldfish (feeders) it's hard to ween them off it. i kept trying and trying, but he wouldnt except anything. so i just dumped in a feeder and yes I felt bad about it. he was amazing, he has gills behind his feet. these guys usually never get off the sand of rock. he camoflagues like a pro, he has this little antennae that he waves when he's hungry. I loved the guy.12 is too small. 30gallon would be fine.