If they fit in his mouth it's likely he'll eat them. I got a couple of otto's in with mine and they're fine. They move too quick I think. I had glowlight rasboras and 2 mysteriously disappeared but the other two are stillin the tank. Neons all got eaten except one and shrimp I'm not too sure about. Excellent fish though mine has bundles of personality and a very wierd relationship with my gourami