实验性研究鱼的生活时,应减小水槽的环境变异.在用多水槽或分离水簇箱控制繁殖和鉴别不同遗传系的研究中,更应注意这一点.用于这类研究的系统有两种,即水温、水质和水量适当的开启式养殖系统和利用充分混合与过滤之循环水的封闭系统.但利用后者时,为了保持恒定的水温与水化学性质,则水的循环利用率应较大。循环系统能调节 The experimental study of the life of fish should reduce the environmental variability of the sink, and more attention should be paid to this in studies that use multiple sinks or separate tufts of water to control propagation and identify different lines of genetics. Two types of closed systems with appropriate open water systems for water temperature, quality and quantity of water, and recirculating water using well-mixed and filtered water. However, in the latter case, in order to maintain constant water temperature and water chemistry, the water recycling rate Should be larger. Circulatory system can be adjusted