fish farmer; pisciculturist
A person who raises fish, typically in aquaculture. The term 養魚家 is a straightforward compound of 養魚 (fish farming) and 家 (person engaged in a profession).
As a fish farmer, he raises carp and sweetfish.
To become a fish farmer, knowledge of fisheries science is necessary.
Compound of 養魚 (fish farming) and 家 (person engaged in a profession). The term is transparent and modern, with no obscure historical derivation.