They all get pieces of pink salmon, whitefish, smelt, herring, mackerel, shrimp, live guppies they can catch and pellets.
The Aul also eat bristlenose plecos (breeding colony in her tank) and all the snails I can get for her. Those little spots on the glass are baby snails not dirt. The malaysian live snails are good because they burrow in the gravel and she must dig to get them. Also since the snails are live bearers they provide loads of young which she hunts down when they are big enough to notice.