Shovelnose catfish and Siluriform fish

Shovelnose catfish noun - Large catfish of central United States having a flattened head and projecting jaw.

Siluriform fish and shovelnose catfish are semantically related. In some cases you can use "Siluriform fish" instead a noun phrase "Shovelnose catfish".

Siluriform fish noun - Any of numerous mostly freshwater bottom-living fishes of Eurasia and North America with barbels like whiskers around the mouth.

Shovelnose catfish and siluriform fish are semantically related. Sometimes you can replace phrase "Shovelnose catfish" with "Siluriform fish", this phrases are similar.