Solo Pea Puffer in 3 gallon open top aquarium?

I do 50% water changes 2x/wk on my 5g betta tank. Happy as a clam that fish. I wouldn't put anything in a tank smaller than that though for my $0.02.

:cheers:
 
i had a dwarf puffer in a jbj picotope for 6 months without problems. did a 50% change twice a week and he always seemed happy.
 
This is all dependent on what kind of hobbyist you are. If you're interested in keeping a smart, inquisitive fish that loves to investigate it's environment & you want to watch it live in this way, than 3-5g is the bare minimum for a singleton The issue is one of quality of life and also one of water quality. Yes, a pair of DPs can and will survive in a 3. They may even breed there. But water quality will not be maintained well or stably. The same pair in a 5 will be better than a 3 and better still in a ten. In that ten you can have one male and a couple of females. In a 15 you can have a trio of females with a single male. In a 33GL you can have a small colony and regular breeding w/o stresses or degradation of water quality. Your fish, your choice...

 
Thanks to all of the experts for your wise advice! After extensive research I determined that sadly the pea puffer dream will not work out. It will have to be a project for another tank so the little guy can be really happy.
 
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