How to prevent goldfish from breeding in autumn? How to remove the fishy smell from the fish tank?

There will be some fishy smell when raising fish indoors. It is impossible to completely eliminate the fishy smell. You can only try to control the odor. Therefore, you can place the fish tank in a well-ventilated place or strengthen the indoor ventilation measures. These are also good methods.

How to prevent goldfish from breeding in autumn

1. If you just want to control the fish from spawning, it is very easy to do. Both fish farms and players can do it well. The most commonly used method is to raise male and female fish separately after autumn. In this way, because the female fish lack the stimulation of male fish, they generally will not spawn. When the male and female fish are separated, even if the eggs in the fish body are mature, they will not be laid due to the lack of stimulation from male fish. This is also the most commonly used and effective method to control the spawning of breeding fish.

2. Of course, in addition to this, you should try to maintain the water quality as much as possible when raising fish. As long as the water quality does not deteriorate, it will be fine. The stimulation of new water will accelerate the development of eggs at the suitable temperature for fish reproduction. At this time, the mother fish will easily lay eggs. Therefore, when the water temperature is lower than 25 degrees, you can appropriately reduce the number and amount of water changes, and try not to stimulate the fish.

3. If you raise fish indoors, you can also influence the gonad development of the fish by controlling the length of light. Generally speaking, the longer the light, the faster the gonad development of the fish. If you do not want the fish to reproduce in the autumn, you can appropriately reduce the length of light for the fish. This can also prevent goldfish from breeding in the autumn.

How to remove the fishy smell from the fish tank

1. Change the water: If the fish tank suddenly has a strong fishy smell, you can change some of the water in the fish tank after the incident. This can reduce some harmful substances in the water and reduce the mucus secretion on the fish's body surface. If the water quality is too poor, this can play a certain role.

2. Water maintenance: This is the most effective method. That is to say, if the water quality is maintained well, the fish will have fewer problems if the water environment is good. At this time, the odor in the water will naturally decrease. If the water body is large, it is recommended to regularly clean the filtration system and add some probiotics.

3. Improve filtration: This is also a relatively effective method, especially for the problem of excessive fishy smell in water caused by poor water quality. You can put some activated carbon in the filter to absorb the odor in the water. In addition, pay attention to the oxygen in the filter. For fish tanks that often have poor water quality and smell fishy, ​​you can consider adding anti-air lift to the filter to enhance the function of the filtration system and eliminate the odor.

How to tell the gender of goldfish

1. Fish body shape: For mature fish, this is very easy to distinguish. Under normal circumstances, the female fish's belly is much larger, and the genital opening is protruding outward, while the male fish's belly is smaller, and the genital opening is sunken and smaller. During the breeding season, the gonads will flow out if you press lightly with your hand.

2. Look at the color of the fish: This is also a good way to distinguish them. In the same species of goldfish, the color of male fish is generally much brighter than that of female fish, and the color of female fish is generally lighter.

3. Look at the star chasing: Star chasing is a secondary sexual characteristic of male fish. Sexually mature male fish will have small white protrusions on both sides of the gill cover and the front edge of the pectoral fin. When you touch it with your hand, you will feel a prickly sensation. This is what we often call star chasing, which is also unique to male fish, especially sexually mature fish will become very obvious during the breeding season.

4. Observe the activity of the fish: Normally, in the same group of fish, male fish will be more active than female fish, and after the breeding season, if the fish are laying eggs, the male fish will chase the female fish until the female fish excretes the eggs.