What do fire beetles eat?

Many beetles eat plant material, but some of them will only eat the seeds of one specific kind of plant, or only the leaves of another type of plant. Some will eat decaying organic matter of almost any kind. There are some that specialize in eating one specific kind of fungus.

There are also beetles that are predatory, and only eat other insects, or only eat carrion. Some prefer aquatic organisms, or specialize in eating snails, or aphids. Others will eat any kind of meat they can get their little mandibles around.