My neighbor was walking outside with a bag and a female betta as was about to chuck it into the bin, I said to him ill take it off you - dont put it in the bin, so he gave it to me, so now I have a female betta, abit fin nipped but in good condition, my question is - if i put my dwarf gouram into my other 20 gallon with my kribs, could I put the female betta in with the tetras and corys?