Red Cap Oranda and Calico Fantail aggression. and oh, hi, im new :D

[Lionhead88]

i have had a Calico Fantail Goldfish for about 5 months now. her name is Wobbles. shes almost 2.5 inches long. she had to be removed form my previous tank because she was being so agressive toward the others, that she was eating thier fins off. (i have a lionhead in the previous tank...my poor little guy doent need to lose anymore fins!)
i bought a Red Cap Oranda 2 days ago. hoping that he would get along with Wobbles. for the first night they were fine. the second night they were being aggresive toward eachother. i moved the redcap into the 10 gallon. then he started being aggresive toward my thoer fish. i moved him back in with wobbles.

im now sure what to do! i dont want to being any back, but if i have to, i will!

please help!

Amanda:goldfish:

 

[Rbishop]

Welcome to AC! I suggest you start a thread in the coldwater forums, with as much detail as possible..such as tank size, how long established, current readings from a good liquid test kit, what kind of fish in each tank and their numbers. More folks will be able to help you then.