Abstract
The breeding of the anemonefish, Amphiprion clarkii, and the settlement of larvae were observed in temperate Japan.Spawning had two peaks near the first and the third quarter of the moon in 1983, but did not in 1984.The clutch size varied greatly during the breeding season, with a peak from the second half of June to the second half of July.Adult fishes inhibited larval settlement. The proportion of disappeared 0-year olds to the total was higher in 1984 than in 1983.This differencemight bemainly due to the difference in the degree of crowding in each sea anemone. The period of larval settlement closely paralleled the breeding season.The larvae settled abundantly around the first quarter and the third quarter of themoon in 1983, and did from the third quarter to the first quarter in 1984.In both years, the number of settled larvae wasmore from the fullmoon to the newmoon than the newmoon to the fullmoon.The daily pattern of larval settlement did not reflect that of breeding.
