The head and front half of the body are bright blue covered with small brick red spots each rimmed in black.

This fish can be confused with Springer's blenny (Scartella springeri) but that species lacks a black rim to the orange spots that cover its body.

[4] The tessellated blenny is found in shallow waters off the coasts of Brazil, Colombia, Venezuela and the Lesser Antilles.

[4] The tessellated blenny lives inside an empty shell of the large barnacle, Megabalanus tintinnabulum.

[3] Fertilisation is external [3] and the male broods a clump of eggs inside the barnacle shell.