2. Herring twitches.
3. The light will tremble.
4. The medaka rolled and died.
1. The body spasm of medaka is usually due to temperature fluctuation.
This kind of fish is small, only 3-4 cm long, but it is very ornamental and colorful.
3. They usually live in the upper water, belong to omnivorous fish, are mild in nature, like swimming in groups, have a certain adaptation range to salinity, and are resistant to hypoxia, so they are easy to raise.
It can reproduce at the age of 3 months, and the fish eggs hatch within one to two weeks.