puffers!

That question is home to quite a controversy from what I've read. Some people claim to keep Figure Eight Puffers in freshwater with no problems, where other people say that their lives are horribly shortened from around 15-20 years to about 2 if kept in freshwater.

From all the different things I've gathered, there is no puffer that wouldn't do better in brackish water.

Somebody here will probably dispute that though.....
 
LOL See? I knew that was going happen. We're both learning here.
 
That's what the boards are for - we all learn.

Puffers are highly adaptable to water parameters as a group, but they still do have their optimum conditions under which they do best - rather like the Cichlids. Other than the dwarves most are very long-lived fish. There are some that we do not yet seem able to keep for extended periods (Tagifugu ocellatus - one of the best-looking - is a prime example).
 
Colomesus Asellus (sometimes also called Brazilian or Amazonian) is a true freshwater puffer. These can be kept in a community tank if they are on their own. If you keep them in small groups, you will find lots of pecked tails and that your smaller 'tetra-type' fish will end up dead! They seem to like hunting in packs. As I know from experience after having 10 of these puffers and they got through about 50 cardinals in a weekend!
 
I belive he is referring to keeping only 1 as opposed to a school of puffers ;)
 
IMHO & IME, individual puffers are too variable to make broad statements about compatability. I have kept Figure 8s who made Jack the Ripper look kind, and one Fahaka which was a wimp, but if you must generalize, no puffer belongs in a community tank. For every positive exception, there are likely to be several negatives. I don't like to play against the odds with my fish, and rarely to never keep predators with schoolers or such community types.
 
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