Hello and welcome. I apologize that no one responded to you sooner. Different experts come online at various times. I just logged in and saw your question. You were speaking with a bot before. I’m a real person. My name is ***** ***** I’m a biologist with over 40 years of experience keeping fish. I’m sorry to hear about Jeremy’s problem.
It sounds like he is suffering from swim bladder disorder. The swim bladder is the organ that enables fish to orient themselves in the water. When something goes wrong, the fish may swim sideways or upside down, or it may float or sink. There are several potential causes. Tge most common one is constipation. The droppings the fish can’t pass put pressure on the swim bladder and prevent it from functioning properly. The treatment for constipation is to feed the fish peeled and thawed out frozen peas. If they’re too big, you can smash them and feed Jeremy part of one. You may need to hold it right it front of his mouth to encourage him to eat. If he will eat, feed him nothing but peas for three days. If he won’t eat the peas, put him on a fast for three days. Also add aquarium salt at the rate of one teaspoon per gallon of water in the tank.
Infection can also interfere with swim bladder function. That can be treated with an antibiotic from the pet store. Melafix is frequently used.
The swim bladder can also be injured. Minor injuries can heal in their own over time. But if the bladder actually ruptures, the fish will never be able to swim normally. A ruptured swim bladder can eventually result in death. However, cobstipation and infection are more common than ruptures.
In summary, I would feed peas (or fast him), add salt to the tank, and treat with Melafix.If you have more concerns, just let me know. I’m glad to help. I hope Jeremy will be fine.
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