That's the thing- I'm not positive he did kill them. If I was, I would definitely take him out and keep him alone. And about the return, it's a 48 hr policy, and I had already had them past that amount of time. :/
After I get off work today, I'll deposit my one check and I think I'll just take Banana Fish out of the big tank and I'll bump up the rasboras and make it just a community.
“Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.” - Albert Einstein