Blennioid and Combtooth blenny

Blennioid noun - Elongated mostly scaleless marine fishes with large pectoral fins and reduced pelvic fins.

Combtooth blenny and blennioid are semantically related. In some cases you can replace phrase "Combtooth blenny" with "Blennioid", this terms are similar.

Combtooth blenny noun - Small usually scaleless fishes with comb-like teeth living about rocky shores; are territorial and live in holes between rocks.

Blennioid and combtooth blenny are semantically related. You can use "Blennioid" instead a noun phrase "Combtooth blenny".