Anglerfish and Spiny-finned fish

Anglerfish noun - Fishes having large mouths with a wormlike filament attached for luring prey.

Spiny-finned fish and anglerfish are semantically related. In some cases you can use "Spiny-finned fish" instead a noun "Anglerfish".

Spiny-finned fish noun - A teleost fish with fins that are supported by sharp inflexible rays.

Anglerfish and spiny-finned fish are semantically related. Sometimes you can replace term "Anglerfish" with "Spiny-finned fish", this terms are similar.