There are many catfish species that would work.
As for Pufferfish, Humpbacks are your only hope. I have kept multiple in communities with Bichirs (Delhezi, Weeksii, Endlicheri, Ornates) with minimal issues.
Good luck.
Ya i guess i can try n find another humpback puffer. Prob is in Montreal it just seems to always be tougher
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