ganoid

Etymology

Ancient Greek γάνος (gános, “brightness, sheen”) + -oid

adj

1. Having a smooth, shining surface, as if polished or enameled: specifically applied to those scales or plates of fishes which are generally of an angular form and composed of a bony or hard horny tissue overlaid with enamel.
2. Having ganoid scales or plates, as a fish; specifically, of or pertaining to the Ganoidei.

noun

1. (zoology) One of the Ganoidei, a disused taxonomic grouping of fishes, including the bowfin, gars, and sturgeons.