I was just wondering "How do you know when your tank is not getting enough oxygen". This may be a stupid question,but I had to ask. I put a black and white clown in my 24gal Aqua Pod and it seems to be breathing really fast. This happened to another fish I had and I ended up taking it out and putting it in my husbands tank.I am also running a powerhead and I can't seem to figure out why it is breathing so fast? Please, any suggestions. All water peremiters are good.

Anita