Dwarf Puffers with Pygmy Cories?

3 puffers should be fine for a 10 gallon, but corydoras do not really behave like otos...the only behaviors i can think of that are similar are the gregarious nature of both species and the fact that otos will sometimes root around in the substrate if the substrate is coarse enough.
 
I just figured that because they aren't flashy (brightly colored) they would be fine. Hopefully my new palu will have enough water space (5 gallons) for a betta and the corys.
 
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