yeah, i took him back that day, i didn't want anymore fish to get eaten.
That's my plan with my lobster. He's in my 5g hex right now awaiting his return to the LFS. He was a fish killer of the worst kind!! And it took me so long (I was trying for a couple of weeks) to get him out of my reef. Finally, after sitting in the dark for a couple of hours with a bottle trap, I got the little monster.
They are very pretty, but I wouldn't trust one again. BTW, they get to be about 6 inches long maximum size if they molt properly. They are very easy to keep.
Good look Saltymom....!