1、 How about raising fish

There is no problem raising fish in watercress green. Many flower friends who like hydroponics like to raise one or two fish in hydroponic containers. In this way, the relatively stiff hydroponic culture has a swimming fish in it, so the viewing effect will be better

2、 Precautions

Pay attention to the fish raised in the hydroponic container. First, the volume should not be too large; Second, there are some varieties to choose from. For example, for fish like red carp, we don't recommend to conserve in watercultured watercress green. This kind of fish is direct feeding and will bite the root of watercress green. This will damage the plants to a certain extent, so the fish suitable for cultivation in hydroponic environment should be suitable for small fish species that do not eat plants, such as some fish of the family Jiang, etc