Sweetfish in Japan

Grazes algae off river stones and defends a territory — which is what makes tomozuri possible. Smells of watermelon.

The fish

Japanese
· ayu
Scientific name
Plecoglossus altivelis
Typical size
15–30 cm (6–12 in)
Water
Freshwater

Across the year

J
F
M
A
M
J
J
A
S
O
N
D

The best month at any of the 4 places we have checked. Each place has its own window, and the season elsewhere in Japan may differ.

Where we have checked it

These are examples, not a complete list. Sweetfish is caught far more widely in Japan than the 4 waters below. We list a place only once we have worked out which rules apply there, so the absence of a water means we have not checked it — not that the fish is missing.