David have your mom pick up some shell fish and feed it to the trigger a couple times a month. Clams, crabs, shrimp (uncooked with the shell, or any type of shelled critters from the grocery store works fine. They seem to eat anything you put in. I have fed a small 2-3 inch trigger about 6 goldfish in one shot before. They will stop eating eventually but you don't have to feed them that much. A gold fish or two a day is fine. They also eat just about any small enough freshwater fish like guppies and so on. Just have mom get a few little things from the store. Maybe they will give her some scraps from the fish they clean. The clown will eat bones and all. I have even seen them eat bristle worms.

Tim