Development of artificial spawning seaweeds of the sandfish, Arctoscopus japonicus

Abstract

began to attach the egg massto artificial spawning seaweeds when sea temperature dropped below 10in December, spawned heavilywhen it was around 8in January, and completed the behavior when it started to increase over 10inFebruary. The hatching period of eggs was estimated to be about 60 days. The middle position in artificialspawning seaweed had the highest number of egg masses and the diameter of the egg mass ranged from 25mmto 62mm. Based on the result for the effects, the artificial spawning seaweeds of