Can Tianjin release koi fish by itself now?

By June 2023 15, this place can be released to koi fish.

By June, 2023 15, koi fish can be released to Tianjin River. They are not alien species, so it is no problem to release them into the wild. March to June is the spawning season for fish, and a large number of fish eggs can be released at this time.

Pay attention to whether there are natural enemies in the river that can threaten them, whether the water quality is polluted, and whether there is food in the river for them to prey on.