高体革（鱼刺）仔稚鱼的生长和发育

Scortum barcoo was an excellent economical fresh water fish which was native in Australia and introduced into China in 2001. After several years domesticated, it can be reproduced and have been an aquaculture target in China, but the fry produce efficiency was very low. In order to make knowledge of growth and development of larva, juveniles of Scortum barcoo and offer basic data for large-scale fry produce, it was studied in this paper by observation, description, and photograph on growth and development. Larva body length of the newly hatching larva ranged from 2.32 mm to 2.98 mm in total length when the water temperature was about 26.6-29.7℃. The volume of the larva's yolk sac and oil globule was calculated by using the formula of 4/3π•R/2•(r/2)^2. The volume of yolk sac and oil globule was (0.74±0.15) mm^3 (n=20) and (0.07±0.17) mm^3 (n = 20) respectively. Coloration of eyes by pigment and 4 pair of branches appeared on 1-day-old. Larva mouth shut up, gut started peristalsis, and swim bladder occurred on 2-day-old. Larva started feeding on 3 day-old. Hereafter, the ontogeny embarked on the post-larval stages. The ontogeny larva was on the juvenile stages after 20 days, larva fin ray completely developed, and scales occurred. Lateral line scale occurred on 23-day-old. Scales entirely developed on 28 day-old, and the ontogeny embarked on the fingerling stages. The relationship between total body length (TL) and age in days (D) was described as: TL=-0.0003 D^3+0.0339 D^2+0.1992 D+3.4288 (R^2=0.9913). The relationships between body length (L) and body weight (W) of larva and juveniles of Scortum barcoo was described as: W=0.0001 L^2.5059 (R^2=0.9976). The relationship between body length and body height during development of Scortum barcoo larva, juveniles was significant and the formula was described as: L=0.0005 H^3-0.0353 H^2+1.0125H-4.620 (R^2=0.993). All these data would be benefit with practice of Scortum barcoo fry production.