This species can reach a length of 14 centimetres (5.5 in) TL.

They blow away the substrate, to uncover insect larvae and crustaceans.

They are characterized by vertical bars, and thin horizontal lines of varying darkness depending on location.

The males blue colouration obscures the barring when dominant.

[3] The lattice like pattern on this fish's body is reminiscent of windows which is what the specific name fenestratus refers to.