Diplecogaster tonstricula, in life, displays a normal ground colour of bright orange on the head and body, adorned with thin yellowish or whitish bars that originate between the eyes.

The eye itself is pale green with brown barring towards the rear, accompanied by a yellow ring encircling the iris.

[2] In terms of its shape, this species exhibits the characteristic triangular head, elongated body, and small dorsal and anal fins positioned toward the rear, as often seen in clingfishes.

[2] Diplecogaster tonstricula has been recorded from Senegal and the Canary Islands in the eastern North Atlantic Ocean.

[3] Diplecogaster tonstricula was described by Ronald Fricke, Peter Wirtz and Alberto Brito in 2015 from types collected near Dakar.