Cavehopper

The cave-hopper resembles a grasshopper with a distinct albino appearance. It can be found in the cool caves of the Fire Nation, as it is intolerant to sunlight and spends most of its life inside dimly-lit caves where it eats algae and other vegetation. Cave-Hoppers are among the favorite snacks of the toucan-puffins.

Anatomy
Cave-hoppers are white. They have long antennae protruding from their heads, along with two short front legs and two larger hind legs, ending in four-digit semi-webbed feet with toe-pads.

Connection
Cave-hoppers seem to be based on cave crickets, with the difference being that real-life crickets have six legs. Grasshoppers are herbivorous insects whose large hind legs are adapted for leaping, and they are generally brown in color, though young crickets sometimes appear translucent.