Comb-like; pectinate: specifically appliedā to a form of scales in fishes in which the posterior margin is pectinated, or beset with small spinules (see cut under scale);to a form of dentition in fishes in which the teeth have comb-like ridges.Pertaining to the Ctenoidei; having ctenoid scales, as a fish.n. A fish with ctenoid scales; one of the Ctenoidei.