What kind of fish can be kept with dwarf puffers?

Answer 1

None really. Dwarf puffers need to be kept in a species only tank. Here's a good link about them:

http://www.dwarfpuffers.com/

Hope that helps

MM

Answer 2

i have a male and a felmale in a 25 with neons, glass cats, gold barbs, otos, cories, and dwarf chain loaches and they all seem to get along fine. just be sure the tank is heavily planted, that really helps with agression.
the 2 DP's were in a 2.5 for a while when they were bredding but now they are just "out to pasture".