Could anyone give me an idea of what I could put with a Porcupine Puffer in a tank by itself. Its a 125g not my old Fifty-five. Anyway shes been in there for a month by herself will this cause aggresion?
Depends on what kind of fish you like. Most puffers are pretty friendly and mind there own bussiness. Maybe a tang, lion, trigger, wrasse, angel. Now some of those fish cant go together but any of them should get along with the puffer.
get a nice lookin eel, snowflake or splurge and get a chainlink or something. A nice lion and maybe a grouper if your lookin for all agressive fish. A tang or angel work out fine together and they are beautiful as well... whats your preference? what are you leaning towards? Bio load will be a huge factor with all aggressive...??