水硬度对七彩神仙鱼幼鱼发育的影响

Effect of Hardness of water on the development of juveniles of Symphysodon aequifasciata

采用不同硬度的水对七彩神仙鱼幼鱼进行饲养。6周龄幼鱼在硬度为7.94°dH±0.30°dH时饲养84d后,比在硬度为14.71°dH±0.23°dH水中的幼鱼个体大,生长速度快。表明较高硬度的水有利于七彩神仙鱼幼鱼的生长发育。

In order to discover the effect of Hardness of water on the development of juvenile of Symphysodon aequifasciata,the juveniles of Symphysodon aequifasciata were raise in the water on different levels of hardness (14.71°dH±0.23°dH and 7.94°dH±0.30°dH).After 84 days,the juveniles of Symphysodon aequifasciata in the water of 14.71°dH+0.23°dH were bigger,the speed of their development were higher. It showed that high hardness is useful to the development of the juveniles of Symphysodon aequifasciata.