In my ten gallon tank, I have a pair of kribs and a black phantom tetra. Today I went to check my tank, and I couldn't find the male krib. I took everything except for a small shell, my sponge filter and my two plants out. I couldn't find him, so I just gave up hope. I thought that he jumped out and got eaten by my cat or dog. So I replaced him with a slightly smaller one. He is floating in the bag right now. So anyways, I go to dump him into the tank, and staring me right in the face is the first male! I am extremely confused at where he came from, but that's not the important part. I need to know if I can put him in the tank. If not, I need to know what else I can do. I can't return him because the guy who checked me out likes me and gave him to me. If anyone wants him, they can pick him up. I live in the suburbs of Buffalo NY. Advice?