Hi all, not sure where else to post this, I didn't see a area just for food related questions.
I just got a Valentini Puffer and he is doing great. He lives with 2 orange clown fish and they have all got along so far now for 2 weeks, cross your fingers.
I feed the clown fish Brine Shrimp, the puffer eats some. After feeding them I give the puffer a chunk of mussel, he loves it. Problem is the clowns come up and steal it

Today he finally got aggresive towards one and they backed off for a little. I am worried if they keep taking his food he will not get enough food to stay fat and healthy. What else should I be feeding him for not only his overall health, but is there something the clowns won't touch?
Thanks,
Will