Sarah88;4200201; said:he wasnt saying it was your oscars fault, he was saying its your fault for keeping it in too small a tank, how long have you had it? as he is right that oscar is sadly already being stunted and needs to be in a larger tank asap, you can start to help it by doing larger, more frequent water changes until you can get the larger tank set-up and yes that white edging on the fins is normal
hes been with me for about two months maybe? if it wasnt for being unemployed now he'd already have a new tank.
i do bi-weekly water changes of about 25%.