Hi, my baby fish... well their feeder fish (thats like goldfish right?) well they were suposst to be food for my brothers turtle

but i couldn't bear to letr my mom do that... So i got these baby fish and i put them in my big tank 50gal with my other goldfish but they were so small i was afriad that my big guy horus would eat them so i transfered them to a 10gal tank that i used as a breeder tank for my bettas and now they have a lot of little white spots on them so i thought it was ick and changed 40% of the water and put in a ick tab(little alka selzer looking thing) and a parisite tab but now one died and he was practicly covered in the white spots HELP BEFORE I LOSE MY OTHER FISH the poor thing lost his friend already now im afriad scoba sam is going to die..

help please.
-Punkie