If the fish has no symptoms of emaciation and skin ulceration, it should be a sign of pregnancy and childbirth. If you continue to observe for two days, please raise the temperature to 28 degrees, keep it at a constant temperature, rest, put pebbles or aquatic plants to avoid or cover the anti-jump tank.

If it is not generated, it can be checked in the following ways:

1, dyspepsia

Slowly, the fish will go through an adaptation period and finally have an appetite after being hungry for a long time. At this time, we often make such a mistake: we can't wait to feed more when we see the fish finally start eating, so we feed more when our hands shake. If the fish eats too much, it will be easy to get indigestion and hide under the water to digest it slowly.

2. Water temperature

Too low water temperature will affect the appetite of fish, especially in polyculture tanks. Different fish have different optimum water temperatures, which will lead to some fish being full and some fish not eating, so they have no strength to swim around. Too low water temperature is easy to induce water mold.

3. Poisoning

If it is summer, if the temperature is not well controlled due to abundant sunshine, the excess nutrition in the water body is easy to breed algae, and excessive algae may secrete some toxic substances to paralyze the senses and nerves of fish, so fish will naturally lie in the nest collectively.

Extended data:

Common diseases and treatment methods of ornamental fish;

1, fin rot: the edge of each fin of sick fish is milky white, rotten and incomplete. Control method: furacilin or furazolidone 1g can be selected, dissolved in 10kg water and soaked in sick fish 10 ~ 20min. You can also choose 0. 1 g potassium permanganate, dissolve it in 10 kg water and soak the sick fish 10 minute.

2. Cucumber disease (white spot disease): There are white spots on the fins and gills of sick fish. In severe cases, the skin and fins are covered with white spots and covered with white mucus. Control method: soak in 4% ~ 5% salt 15 ~ 20 minutes.

3. Hydromycetes: The pathogen is Myxomycetes, and there are gray-white cotton-wool hyphae on the body surface or fins of diseased fish, also known as white spot disease. It usually happens in late autumn and early spring. Treatment method: soak in 3% ~ 5% salt for 20 ~ 30 minutes or soak in chlorine preparation and iodine preparation.

References:

Ornamental fish-Baidu encyclopedia