Ha.. my guess would be yes.. tiger barbs do get to only 3 inches and that is small enough for a large adult datnoid to suck 'n gulp them down D: Clown loaches on the other hand, no prob. They get big and grow slow like dats.. but gotta make sure you have both at the same size though. It would be quite a nice combination of fish that have tiger qualities in a tank if the dat isn't predatory.