I hope the Moba don't see the Mdoka as food. I had hoped to grow out some tinfoil barbs with my Moba as they were too big to fit in Moba's mouths. But at night times they were biting off the rear 1/3 of the tinfoil barbs bodies with the tails. I decided to leave the rest of the tinfoil barbs in the tank and they were all partially eaten within a few days. My Moba are wild caught though which I know makes a big difference in how they see smaller fish as prey.