Abstract
The growth of the Hatatatenumeri-dragonet Repomucenus valenciennei was studied based on 13, 287 specimens collected by three kinds of trawl survey in Tokyo Bay during the period from June 1990 to September 1993. Growth and the life span were estimated by analyzing length frequency data. Year classes of 1990 and 1991 were used to estimate the parameters of the growthcurves. The growth of the dragonet showed seasonal oscillation and was best expressed by modified logistic rmulae, in which the growth rate changes with a cycle in a year. The life span was estimated to be two years for both sexes, reaching 94mm for females and 110mm for males in mean standard length.
