I have 6 otocinclus cats in with 7 clown loaches and 10 tiger barbs. They've been together for about 8 months now, and the two larger loaches have started chasing the Otos. It looks like the same behavior the loaches and barbs display playing or sparring but the otos almost jump out of the tank. It's pretty infrequent but I've never had clowns before and wondered if they are sizing up the Otos for a meal (I'd hate to lose them).... Thanks for your time