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

fishfinder

(mahjong) winning off the final discard before reaching the dead wall, worth 1 翻 (han, “double”)

(figuratively) being carefree and unaware of an imminent danger

(figuratively) larger-than-life characters do not associate with unnoteworthy characters, nor do they concern themselves with trivial matters / (literally) boat-swallowing fish do not swim in tributaries