鮎 - freshwater trout, smelt

ayu (Plecoglossus altivelis); sweetfish

sweetfish sushi; ayu sushi; belly of sweetfish salted, pickled and served on rice

young sweetfish

Ryukyu sweetfish (Plecoglossus altivelis ryukyuensis)

Hyonenzu (painting by Josetsu, 1415)

fat greenling (Hexagrammos otakii)

fishing for ayu

ayu fishing

sweetfish going downstream to spawn (in autumn)

young sweetfish; young ayu

fourspine sculpin (Cottus kazika)

Patagonian toothfish (Dissostichus eleginoides); Chilean sea bass