Research Paper Volume 16, Issue 18 pp 12443—12472

Figure 2. Body growth from the onset of sexual maturity to the old stage. (A) Representative images of male and female fish at the following four different life stages are shown: onset of sexual maturity, young adult, mature adult, and middle-aged adult. The numbers in the lower right corner of the images indicate the body length of the fish observed at each life stage. The arrows indicate fin coloration. The black lines in the images are drawn at 1 cm intervals. Blue scale bars, 1 cm. (B) Body length and body weight at each age after the onset of sexual maturity to the old stage (20 wph). The blue points indicate group-housed fish; the pink points indicate single-housed fish. Each point represents an individual fish. The data were obtained for 9-20 fish at each age from pooled data from one (group housing) and four (single housing) independent experiments. The data are shown as the mean ± S.D. *, p < 0.05; **, p < 0.01; ns, not significant by the Tukey test. (A, B) G: group-housed fish, S: single-housed fish.