Photo: Unknown author / Public domain (via Wikimedia Commons)
Plecoglossus altivelis
Ayu (Sweetfish)
Freshwater
About this species
A slender, territorial river fish famous for its clean watermelon-like scent. It grazes algae off rocks in clear streams and fiercely defends its patch. This behavior powers the traditional 'tomozuri' method using a live decoy.
Season
123456789101112
Depth
0 – 3 m
Habitat Spots
RiverStream
Fishing Methods
FlyFloat
Bait & Rig
Traditional live decoy 'tomozuri' with snag hooks, or small flies over algae-covered rocks.
Edibility & Taste
Prized delicacy, best salt-grilled whole; its scent is part of the appeal.
Similar Species
Told from young trout by its single dorsal fin and no adipose-like spotting.
Record Weight
0.3 kg