Pylodictus olivaris and Siluriform fish

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

Siluriform fish and Pylodictus olivaris are semantically related. In some cases you can use "Siluriform fish" instead a noun phrase "Pylodictus olivaris".

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

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