Yep, extremely small fast swimming fish with a (full grown) dovii could be done. Especially schooling species would work wonder. There's a risk of a few being eaten though. If said species could breed on the tank on their own, then that's not a problem.Not to hijack your thread but I was going to ask a theoretical question like this, what about micro fish with a full grown dovii? A large school in the aquarium first then add the dovii in last, raised on pellets, lot of sight breaks.