gold ram

[slamster17]

my gold ram has a big white lump not rele white but creamish on his sidi thikn its his left well hes had it since i got him about 2 weeks ago and me being nieve thinking it would fix itself did nothing. hes happy and healthy but just now i noticed that he now has small white specks on his fins and tail. what should i treat him with and would a 1 gallon container be fine for temporary quarantine?

Should i also treat the tank he is in preventatively?

thanks