THE OPTIMUM TEMPERATURES FOR THE MANDARIN FISH(SINIPERCA CHUATSI)AND THE NORTHERN SNAKEHEAD(CHANNA ARGUS)

Studies on the optimum temperatures for food consumption and growth in the mandarin fish Siniperca chuatsi)Basilewsky) weighing 47.2-540.2g and the northern snakehead weighing 47.2-540.2g and the northern snakehead Channa argus)Cantor)weighing 45 0-546 2g were conducted in the laboratory. The maximum rate of food consumption in the mandarin fish increased with increasing temperature, and an "optimum temperature platform" was formed between 25-35℃. At lower temperatures)10-25℃), the maximum rate of food consumption in the northern snakehead increased with increasing temperature and an "optimum temperature platform" was formed between 25-30℃. A further increase in temperature led to decreased rates of food consumption. The specific growth rate in the mandarin fish increased with increasing temperature, and an "optimum temperature platform" was formed between 25-35℃. The specific growth rate in the northern snakehead was interacted both by body weight and temperature. weighing 45 0-546 2g were conducted in the laboratory. The maximum rate of food consumption in the mandarin fish increased with increasing temperature, and an "optimum temperature platform" was formed between 25-35℃. At lower temperatures)10-25℃), the maximum rate of food consumption in the northern snakehead increased with increasing temperature and an "optimum temperature platform" was formed between 25-30℃. A further increase in temperature led to decreased rates of food consumption. The specific growth rate in the mandarin fish increased with increasing temperature, and an "optimum temperature platform" was formed between 25-35℃. The specific growth rate in the northern snakehead was interacted both by body weight and temperature.