Body shape is compressed, robust, and relatively short.Head is large, with ridges and spines; notably spiny with deep pits and grooves.Eyes are prominent and elevated.Mouth is terminal, large, with a slightly oblique gape.Skin is rough with numerous fleshy flaps and cirri, aiding camouflage.Coloration is highly variable—brown, red, orange, or mottled—with excellent camouflage matching surrounding substrates.