I bought a 35 gallon tank from a guy that had a 10" fireside oscar and a catfish in there and i know thats not nearly a big enough tank for these guys. we brought the tank to my house with the oscar in the tank with about half of the water, and this water is filthy. they didnt ever vacuum the gravel or do frequent water changes. so i started doing a large water change, vacuumed the gavel. i had my light hood leaning on the side of the tank because it was easier to see inside the filthy tank and the water was quite stirred up. then i look from the top of the tank and saw thousands of tiny white parasites swimming around. im thinking that these are ick or velvelt parasites but the oscar has only a small amount of visible dots on him so im thinking that they are in his gills, or they are at the stage where they leave the fish and multiply. So i dosed the tank with coppersafe and salt. but i had my arm in the tank for about 15 minutes and i was wondering if i could get the parasites in me. i know they live in water but im still worried because im kind of itchy right now. So is it possible for a person to get infected with these parasites?