hector

Question.... I have two fish(fantails) one is bigger than the other and it seems to be chasing the other one around alot and butting the wee one? i dunno what to do. also the wee one appears to have this small silver and black tiny wee thing underneath its skin near its tail under its body? i am not sure if this is some sort of parasite? please help! cant seem to get answer anywhere else!

Neville

hi hector, welcome to fishlore!!! well, we need more info about your tank, such as, its size, do u have any other fish? is your tank cycled? etc. goldfish r very peaceful they hardly chase each other, looks like its an infection near the anus. perform frequent water changes, and u can transfer the small fish into a hospital tank and use some medication.