[2] The specific name, gilberti, is in honor of American ichthyologist Charles Henry Gilbert.

The preferred natural habitats of P. gilberti are shrubland and rocky areas at altitudes from sea level to 70 m (230 ft).

[1] P. gilberti may attain a snout-to-vent length (SVL) of 55.5 mm (2.19 in).

There is a light gray stripe from the nape of the neck to the middle of the back.

Ventrally, it is pale lemon-colored, except for the throat which is light flesh-colored.