A good example would be when a fish keeper buys a new fish from the fish store where nitrate levels are kept low. Nitrate shock can kill fish in a matter of 24 hours. New Oscar fish looks sick.

They then take the fish home and put it in their own aquarium where nitrate levels are very high.

Oscar fish Nitrate shock can also occur in a mature aquarium. I think he likes fish sticks But seriously i need advice on why my oscar is laying to the side is he sick or is Is my oscar fish sick Hello we have had a 4inch oscar fish for about 5 months sometimes he will lay on the bottom of the tank for half a day but this time he has been laying there for three days he has eaten a little but he is not himself at all. When we put our hand in he swims and look ok but soon goes to the bottom again Oscar fish that develop a fungal infection have a growth on the skin that looks similar to a tuft of cotton. The color starts off white but as the infection worsens it can change to gray brown or red. Infections occur on the skin fins or mouth. When oscar fish are mishandled or otherwise injured the outer layer of the skin can be My oscar the oldest fish in my tank appears to be sick. He just lays on the bottom and does not move.

He hasn t eaten in about a week. No spots or other outward signs. Water quality is good. I have had him for about 6 years. Any idea what could be wrong with him If condition looks chronic a 10mg per liter ratio of antibiotic in water is recommended. Chloramphenicol is very effective in this treatment. It is evident that there are many oscar fish diseases. This therefore means that for a person that hopes to have successful rearing of oscar fish the caring aspect is a necessity. One more thing if the sick fish is the one in the picture be aware that such fish is not a tiger oscar. The fish in the picture looks more like a managuense to me. My husband had tiger oscars.

Look at the link below The oscar could also be suffering a bladder problem. Dont worry this can be fixed easily simply take a frozen pea or a raw pea whatever works best for you and boil it then feed it to your oscar with some feeding tongs. Peas are a natural lacsitive for fish so it will empty your oscars intestine. Hope everything works out Fish struggles to swim may float with head tipped down or have difficulty surfacing no balance etc. May occur after eating. Swim bladder disease stop feeding for 3-4 days. If symptoms persist feed the affected fish a small amount of fresh spinach or a green pea without the skin laxatives . My mr oscar isn t well i have had him coming on 6 years now but the last 2 days hes just laying on the bottom of the tank it looks like he cant swim properly when he tries then all of a sudden he will dash around the tank and then just lie there again he s not eating either we have tested the water and that s fine and yes b4 u ask the tank is big enough 4 him Hes norm very friendly when u go

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