Old man fish generally refers not to a type of fish, but to a fish that does not grow large due to various reasons. There are many reasons that cause a fish to become an old man fish, it may be due to the usual underfeeding, resulting in its lack of nutrients, thus becoming an old man fish. It could also be that there is too little room to move around and the fish can't exercise, so it doesn't grow big either. In addition, in the growing period of disease, or stimulated by drugs, will also become old man fish. First, what is the meaning of the old man fish

The old man fish in addition to monkfish and Ge's perch Channa alias, most of the time refers to the old man will be the old man of the fish. Fish in the growth process requires a certain amount of nutrition, but also pay attention to the movement, if the fish eat not hold, while the growth of space is limited, it will lead to its growth rate slowed down, do not see the increase in body length. And once you miss the growth period, you want to make it grow again, it is impossible.

Second, what are the causes of the old man fish

1, nutritional deficiencies: the old man fish is most likely to be the result of nutritional deficiencies, which is mainly due to the usual feeding is not enough, or feed with unreasonable. Therefore, in the daily feeding process, you need to feed every day, usually feed 1-2 times, each time to feed to seven or eight minutes full, so that the fish can grow up healthy.

2, not enough space: fish tanks sometimes also limit the growth of fish, resulting in it grow into old man fish. Generally according to the type of fish, choose the right size of the tank, make sure that it can swim up in the tank, it is best to also provide a certain amount of water flow in the tank, which can also promote it to swim.

3, growth period disease: If the fish is sick during the growth period and not treated for a long time, it will delay its development time. Usually this kind of old man fish can be compensated for, as long as there is enough feeding in the later period, and also enough space for movement, it can recover a little bit, and may not be as big as the other ones as an adult fish, but it is not particularly small either.

4, drug stimulation: fish in the disease period if the drug is not appropriate, it will lead to it because of drug stimulation into the old man fish, this situation is currently there is no way to reverse, can only pay attention to the choice of drugs and the amount of drugs in the period of the disease, or try to not use drugs in the way of treatment.