Amia calva and Ganoid fish

Amia calva noun - Primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America.

Ganoid fish and Amia calva are semantically related. In some cases you can use "Ganoid fish" instead a noun phrase "Amia calva".

Ganoid fish noun - Primitive fishes having thick bony scales with a shiny covering.

Amia calva and ganoid fish are semantically related. Sometimes you can replace phrase "Amia calva" with "Ganoid fish", this phrases are similar.