Will i have a 10 gallon tank and i have about 7 goldfish in there however they are small, now i know that my water temp is ok, but my fishes are acting weird i dont know what to do, they have white spots on their bodies, and some of them have a red on their fins and some are just staying in one spot i know this is not good news, please tell me what i am doing wrong or what i should do. Also some of them poop out white strands and i dont know what that means and some of their fins look like they are tearing apart!!!!!!!!!!!!!!! please i had these fishes for 1 year now and i really love them what should i do