1. Insufficient space: The guppies don't grow because the breeding density is too high. Although guppies don't have high requirements for space, the lack of space for activities will lead to their inability to develop better.
2. Malnutrition: The short growth of guppies may also be caused by malnutrition. If breeders feed them with low nutritional content for a long time, it will be difficult for them to grow up.
3. Inbreeding: It may be caused by inbreeding that guppies don't grow long. Although they have strong breeding ability, their genes and body shape will be affected if they reproduce for more than three generations, and their body shape will not grow up again.
2. How to raise guppies to grow bigger1. Keep enough space: If you want guppies to grow bigger, you must ensure that they have enough living space and free space to move, so that their body can develop better.
2. Keep adequate nutrition: Breeders should also feed guppies with more high-nutrition food, so that they can have enough nutrition to develop their body shape.
3. Keep the environment stable: Breeders should also keep the environment in which they live stable, especially the water temperature and quality, without too much fluctuation. Usually, the temperature difference should be controlled within 2 ℃, and the fluctuation of PH value should be controlled within 0.2.