Yeah I had one when I was little. It outgrew my 29 gallon and when we were going to bring it to the pet store it died
Are there any puffers I could possibly put them in?
Also do they really need full salt when they are older or will they manage in fresh or brackish?

Yup thats them.

Hi guys.
Right now I have 2 shark cats in a 10 gallon tank together (I plan on upgrading it soon) I was wondering what kind of fish could go in a tank with them? Would they do ok in a pond because someone told me they could. Thanks