Swimming performance (aerobic and anaerobic) is often used to predict the ability of fish to adapt and survive. Fish raised in captivity are typically poor swimmers and have lower survival rates than wild conspecifics when released into the natural environment. We investigated the potential for exercise training to enhance the swimming performance of Schizothorax wangchiachii held in captivity. Juvenile fish (mean body mass 1.40 ± 0.13 g, mean body length 4.36 ± 0.24 cm) were trained under five different regimes [3 cm·s-1 control group (C), 10 cm·s-1 for 6 (L6) and 12 h (L12) per day and 20 cm·s-1 for 6 (H6) and 12 h (H12) per day] for 30 days and then detrained for 20 days (i.e. no training). Aerobic (i.e. critical swimming speed, Ucrit), anaerobic swimming performance (i.e. endurance time at 1.2 or 1.5 Ucrit), and morphological parameters were measured at the beginning (T0), after 30 days of exercise training (T30) and after 20 days of detraining (DT20). Aerobic exercise training significantly improved the Ucrit, endurance time at 1.2 and 1.5 Ucrit of juvenile S. wangchiachii (P < .05). After 20 days of detraining, both the aerobic and anaerobic swimming performance of the H6 and H12 groups declined and no longer differed from the control group indicating a failure to maintain improved swimming performance, whereas improved swimming performance was maintained in L6 and L12 groups. No significant difference in swimming performance was found between 6 and 12 hours training at 10 cm·s-1. Thus, exercise at close to 10 cm·s-1 for 6 h per day for 30 days or a longer time periods prior to release appears to be a suitable regime for swimming performance enhancement, potentially increasing survivability of released S. wangchiachii in wild.

中文翻译：

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运动训练和减训练后的王氏Schizothorax wangchiachii的有氧和无氧游泳性能得到改善：对渔业释放的影响。

游泳表现（有氧和无氧）通常用于预测鱼的适应能力和生存能力。被圈养的鱼通常是差的游泳者，当释放到自然环境中时，其生存率要低于野生种。我们调查了运动训练的潜力，以提高人工饲养的王氏Schizothorax wangchiachii的游泳性能。对幼鱼（平均体重1.40±0.13 g，平均体长4.36±0.24 cm）进行了五种不同的训练[3 cm·s-1对照组（C），10 cm·s-1的6组（L6）和每天12 h（L12），每天20 cm·s-1进行6（H6）和每天12 h（H12）进行30天，然后进行20天的训练（即不训练）。有氧运动（即临界游泳速度，Ucrit），无氧运动表现（例如，耐力时间为1.2或1.5 Ucrit），在开始训练（T0），运动训练后30天（T30）和训练后20天（DT20）后测量形态学参数。有氧运动训练显着改善了少年王氏八哥的Ucrit，耐力时间分别为1.2和1.5 Ucrit（P <.05）。训练20天后，H6和H12组的有氧和厌氧游泳性能均下降，并且不再与对照组有所不同，这表明未能保持改善的游泳性能，而L6和L12组则保持了改善的游泳性能。在以10 cm·s-1进行的6到12个小时的训练之间，游泳表现没有显着差异。从而，