Trixiphichthys, is a monospecific genus of marine ray-finned fish belonging to the family Triacanthidae, the triplespines or tripodfishes.

Trixiphichthys was first proposed as a monospecific genus in 1941 by the British ichthyologist Alec Fraser-Brunner with Triacanthus weberi designated as its type species.

[2] T. weberi was first formally described in 1910 by Banawari Lal Chaudhuri with its type locality given as Gopalpur, Odisha.

The specific name honours the German-born Dutch ichthyologist Max Carl Wilhelm Weber, who helped Chaudhuri with notes in his original description.

[6] Trixiphichthys has the scaly ventral surface of the pelvis which is wider to the front and tapers to a distinct point.