louse

Alternative spelling of 鱛

a Japanese giant salamander

(idiomatic) "a fish who's found water" → In one's element, a duck to water.

a fourspine sculpin (species Cottus kazika); very similar to the kajika (see below), but larger

(rare) a fourspine sculpin (species Cottus kazika); very similar to the kajika (see below), but larger

a Japanese fluvial sculpin (species Cottus pollux), more commonly known as 鰍 (kajika)

a Japanese fluvial sculpin (species Cottus pollux); very similar to the kamakiri (see above), but smaller

Alternative spelling of かじき座 (“Dorado”)

an apophyllite