Distinguishing whether the discus fish is an old man fish can mainly be seen from the appearance:
1. Generally, the old fish is a little smaller than the normal angelfish, which is caused by insufficient nutritional intake during the growth period.
2. It can also be judged from the eyes. If there is an eye line, the eyes of normal angelfish are located at about a quarter of the eye line, that is, the whole eye line can arrange at least four eyes. The eyes of the old fish are larger than those of normal fish, so the number of eyes that can be arranged at the eye line is less than four.
3. Judging from the mouth, the mouth of the old fish is more prominent than that of the normal fish.
1. Feeding: Ensure three meals a day, can be fed frozen red worms, fine earthworms, pellets, hamburgers and so on. Each feeding should have a different pattern to ensure balanced nutrition, feeding volume to eat within five to ten minutes.
2. Activity space: can artificially set the flow of water to promote its movement. At the same time, the breeding density should be controlled reasonably to ensure that each adult fish has at least 10 liters of space for activities.
3. Aquaculture observation: in the process of breeding should always pay attention to its physical condition, once the disease should be treated in time.
The old fish is caused by insufficient nutrient intake during its growth, and it is difficult to return to normal. But can be cured by the method described above to make them grow better.
