I stopped at one of my LFS's today and say he had 3 spotted/leopard puffers. now the guy who owns the pace wasn't a big help. all he could tell me was that they were aggressive but couldn't tell me how aggressive and if my existing fish would get along with one. I was thinking of putting one in my 10 gallon and give away or trade in my guppies and rasboras to make room. now will a puffer be ok in a 10g and if so will it harm my loaches, cories, or bn if I get rid of the guppies and rasboras?