European catfish and Silurid fish

European catfish noun - Large elongated catfish of central and eastern Europe.

Silurid fish and European catfish are semantically related. In some cases you can use "Silurid fish" instead a noun phrase "European catfish".

Silurid fish noun - Old World freshwater catfishes having naked skin and a long anal fin more or less merged with the eellike caudal fin.

European catfish and silurid fish are semantically related. Sometimes you can replace phrase "European catfish" with "Silurid fish", this phrases are similar.