Sounds bacterial to me can the fish maintain i's balance in the water, not the writer of this information below.
Fish may have reddening at fin bases, blood streaks throughout the fins and body, small hemorrhages around the eyes. Dull listless behavior and lack of appetite may also be present.
Cause:
Systemic bacterial infection caused by various bacteria, including Aeromonas, Pseudomonas and Vibrio. The illness is often brought on by poor water quality or as a result of parasitic infestations or other infections. These bacteria enter the blood stream and circulate through the tissues causing inflammation and damage. Inflamed blood vessels in the skin and at fin bases stand out. Blood vessel and heart tissue damage cause hemorrhaging and consequently leakage of body fluids into the abdomen, which may lead to Dropsy.
Treatment:
Water conditions must be improved for all fish in the tank, regardless of how many fish are infected. Check your water’s Treat with Kanacyn or Tetracycline as well as with a medicated food if the fish will eat. If parasites are suspected, all the fish in the tank should be treated with antiparasitic medication. Using salt to help restore osmotic balance might be helpful.
Not the writer of this information below.
The Swim bladder is a gas-filled sac located inside the fish’s body cavity just above most of the other internal organs. This sac is what gives the fish buoyancy and controls equilibrium. The amount of gas in this sac changes as the fish rises and sinks in the water, enabling it to swim, hover and move in the water. Without the use of the Swim-bladder organ a fish is unable to control it's own movements.
Symptoms:
Fish with a swim bladder disorder appear to have an abnormal swimming pattern, usually with their tail end up. They also appear to have difficulty maintaining equilibrium. They may even float upside down or appear to be stuck at the surface of the water, being unable to swim down, or they may lie on the bottom, unable to rise. Fish with a swim bladder disorder will continue to try and feed, showing a normal appetite.
Cause:
The most common cause of swim bladder disorders is improper diet. An improper diet can lead to intestinal gas or intestinal blockages. Intestinal blockages can irritate the bowel, giving bacteria or other parasites an entry point where they can then cause damage to the swim bladder. Swim bladder disorders are most common in the larger, deep-bodied varieties of Goldfish. Fish also fed a lot of dried foods, especially pellets, are most susceptible. This condition is frequently observed in the later stages of Malawi Bloat, which is primarily due to an improper diet as well and intestinal irritation.
Treatment:
Because this disorder is due principally to an improper diet, a change in their feeding needs to be made. Dried foods with lots of protein should be kept to a minimum. Pellets and other dense foods should be soaked prior to feeding or completely eliminated from their diet. Foods with lots of fiber should be introduced, such as zucchini, squash, spinach, romaine lettuce, peas, and grated carrots. If you suspect that the fish is victim to a bacterial infection, treat the fish with a medicated food.
