I bought a synodontis catfish a few days ago and I'm worried he's not getting fed enough, he's in a 37 gal tank with 9 juvenile malawi cichlids. Every time I feed, the cichlids seem to devour all the food in the tank no matter how much I put in and It seems like the catfish isn't getting any and he's looking rather skinny. The tank is very new and there is no algae for him to graze on yet, what can I do to make sure he gets some food?