After being wronged for so long, will it really eat "to death"?

The goldfish was not "supported", but was "stunned".

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Feeding goldfish is very particular about it. I often listen to people and say that they cannot be fed too much when feeding fish. Goldfish do not know that they are full. After eating too much fish tank "fragrant jade", the goldfish are often buckled with a "unknown" hat, and those fish raised in the fish ponds seem to know how to eat the etiquette. Special variety, stupid than other fish? There are also a lot of goldfish who have raised goldfish, especially those who have raised goldfish often teach novice. When feeding the goldfish, they cannot put too much food to the fish tank, otherwise it will always eat it and eat until it is died. So, is this really the case?

In fact, although the goldfish is not smart, it is not stupid enough to be killed.

01

Goldfish and catfish are stupid

Goldfish originated in China. It is the same category as the academic classification of catfish, also known as "golden catfish". It is similar to carp. It is evolved from red and yellow wild catfish. Regarding the goldfish, the text records of "red scale fish" during the ancient Jin Dynasty were called the national essence of China. Goldfish is gentle and easy to raise, and its life span is about 6 years. The goldfish is strange, beautiful in shape, colorful, and is loved by people.

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02

Feed decomposition and consumption of oxygen is the "culprit"

Goldfish feed is mainly eaten and synthetic fish, but no matter which one, there will be endless feed left in the fish tank when the feeding amount is too large, which leads to the problem. Appear. Golden fish after eating increased the oxygen demand due to digestion of food. The food in the water will be decomposed and deteriorated by microorganisms. On the one hand, the broken foods will produce a variety of toxic metabolites and pollute the water. On the other hand, the microorganisms will also consume the dissolved oxygen in the water during the classification process. At the same time, if you feed live food, the food itself will increase oxygen consumption.

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As a result, after feeding fish, the water in the fish tank will occur in water quality and decreased oxygen. When the amount of dissolved oxygen in the water is insufficient, the goldfish will cause physical dysfunction caused by hypoxia, which will cause the death of the goldfish. Therefore, the goldfish is not actually "not hungry and full". Most of the goldfish raised in the fish tank died because of dissolving oxygen in the water.

03

Is it okay to buy the goldfish? That is you who can't pick it up

There are many friends who have encountered this situation. When buying fish in the flower, birds and insect markets, gold and fish are all alive, but they can "die" after a few days. What is the reason why there is no frequent change of water or feeding a lot of fish?

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In fact, the goldfish on the market are prone to damage and cross -infection due to the variety of varieties, long transportation cycles, and frequent operations. In order to prevent large -scale goldfish infection, many merchants will add antibiotics to the water to enhance the resistance of fish. In this case, the selection skills when buying goldfish are particularly important. The color of the healthy goldfish gills should be bright red. The color of the fishtail is bright and translucent, and the fish should be a normal fin color around the anus of the fish. The fish gills of the diseased fish are darker, the color of the fishtail is dark, and bloodshot and split.

After understanding these knowledge, we must pay attention to a small amount when feeding goldfish in the future, and we must clean up in time when there are fish. Of course, you should also pay attention to the problem of oxygen supply, so as to avoid tragedy.

Author | Ding Xiangyang

Expert of review | Xu Gangchun Director of the aquaculture Research Office of the Tamsui Fishery Research Center of the China Fisheries Sciences Research Institute of China

This article is originally created by "Science Popularization China-Scientific Principles". The "scientific rumor" platform is tidelled and adapted. Please indicate the source when reprinting.

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Source: science rumor

Edit: Just_iu

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