Ich, also known as ick is a parasite that looks like white dots (looks like he was sprinkled with salt) all over his body and head, even eyes. He may be less active, may hav…e stopped eating, fins may be clumped. he may also be darting and scratching against rocks, plants and whatever else he can find..
Because ick is contagious , it is preferable to treat the whole tank when one fish is found to have it. Ick is temperature sensitive: Leave your betta in the community tank and raise temperature to 85 F and add one drop of Aquarisol per gal every day until cured. It will only take a few days to get rid of the pesky little parasites. If your betta lives in a jar/bowl, then you cannot raise the temperature. Do not attempt to put a heater in a tank smaller than 5 gal. You cannot control temperature fluctuation in a small tank/bowl and will probably end up boiling your betta!!! Do a full water change and add one drop of Aquarisol and aquarium salt (1/2 teaspoon per gallon) to the water. If you have empty tank and heater, then move betta to it and raise temperature of water to 85 F as per above. (MORE)