See text Ctenothrissa is a prehistoric genus of marine ray-finned fish in the order Ctenothrissiformes.

[1] It contains a number of species known from the Late Cretaceous (middle Cenomanian to early Turonian) of England and Lebanon.

While they are sometimes included in the superorder Acanthopterygii or Protacanthopterygii, this is neither well-supported, nor is the monophyly of the "Ctenothrissiformes" robustly established.

It has instead been suggested by some authors that the supposed order is a paraphyletic assemblage of ancient moderately advanced Teleostei; for example, the ctenothrissiform Aulolepis is found by some authors to be an aulopiform.

[5][6] This article about a prehistoric ray-finned fish is a stub.