Can I keep a few dwarf puffers in with my red eared slider?

He is a little bigger than a quarter and never harms my fish. I have had all kinds of fish in with him and he never harms them. Unless they are dead. The. He eats the body. Lol. I am more worried about the puffers hurting him. I used to have a tiger barb that attacked him all the time. Will they attack him?