Whether the rotten meat on the back of guppy can live depends on the treatment. If the rotten meat on the back of guppy is not serious and the breeder can treat them in time, they can generally recover and survive. Because their backs are rotting, which is probably caused by post-traumatic infection or other bacterial diseases, the breeder can treat them in time, and then they can recover. If the guppy's bad back meat is serious and the breeder treats them incorrectly, it will cause their condition to worsen, so they can't survive at this time.

1. Change water: After the rotten meat on the back of guppy fish appears, the breeder needs to change the water immediately to keep the water clean. As long as the water is clean, their wounds will not deteriorate.

2. Isolation: If they are infected by bacteria, the breeder needs to isolate them immediately to prevent them from spreading to other fish.

3. Drug application: After isolation, breeders also need to use anti-inflammatory drugs such as potassium permanganate and oxytetracycline to give sick fish a medicated bath. Take a medicated bath once a day, each time for 15-25 minutes, and stick to it for about one week, and the rotten meat will be cured.

4. Clean up the affected area: If the rotten meat of guppy is serious, the breeder needs to clean up the rotten meat and then give the sick fish a medicinal bath.