魚

Japanese pond smelt (Hypomesus nipponensis)

Japanese giant salamander (Andrias japonicus)

cartilaginous fishes; chondrichthyans

dragon-like cryptid fish with many whiskers and no bones (likely a sturgeon)

Pacific ocean perch (Sebastes alutus)

comb goby (Ctenotrypauchen microcephalus)

Matsubara's red rockfish (Sebastes matsubarae)

Japanese dace (Tribolodon hakonensis)

any edible red saltwater fish

bony fishes; osteichthyans

ice goby (Leucopsarion petersii)

Astronomy

Piscis Austrinus (constellation); the Southern Fish

redwing searobin (Lepidotrigla microptera)

charms of a uniquely beautiful woman; (so beautiful that) fish stay on the bottom of water and flying wild geese fall from the sky in shame

lancelet; amphioxus

ray (any fish of superorder Batoidea)

Japanese pinecone fish (Monocentris japonica)

long snouted lancetfish (Alepisaurus ferox)

Idiomatic expression

being in a helpless situation; (like a) fish on a chopping board

opah (Lampris guttatus); moonfish

log on the roof of a shrine set perpendicular to the ridgepole

larva of fish; larval fish

young fish

牛尾魚 is gikun

flathead (esp. the bartailed flathead, Platycephalus indicus)

marlin; swordfish; spearfish; sailfish

Abbreviation

Japanese anchovy (Engraulis japonica)

fish swimming about in water

cheap fish for the masses (e.g. sardines, mackerel, pike)