In another thread, I questioned why ottos, and ghost shrimp, are always listed as possible tankmates. It is always said those two may or may not get harrassed/killed, so why recomend it? (I have kept Dps with danios with no losses.) The only reason I have gotten from those advocating ghost shrimp as to why it's OK is they are cheap, and losses are easy on the wallet(ottos usually seem to be left alone). Seems the case would be the same with most any cheap fish. There was an exelent article in the above mentioned thread posted by RTR, that stated DPs (and all puffers) should be left to a species only tank, but if you want to try and keep other fish with them, have another tank handy so if a problem does arrise, you can separate them. Assuming you have another tank, you could try it if you are willing to monitor the situation VERY closely.