Ive got a pea puffer tank and love the little guys! Behaviorally I would consider them similar to many of the dwarf cichlids, but pea puffers just don't play nice with other fish. One of my friends has a green spotted puffer and an amazon puffer and they're glass surfing machines. Not to mention that he's always having to worry about over grown beaks and trimming. I would go with pea puffers if your looking for an enjoyable, charismatic freshwater puffer!