My female RES is twice the size of my male RES and she usually bosses him around but since this spring he has started to bite her neck and her tail. He has done his mating dance thing before, she is none reseptive, she is only 3 years old. They have been together for the last two years with no problems. They are in a tank now that is twice the size of their old one, I thought that this would help. He now gets her in the cornor and bites her neck as she swims around the tank and he now hangs on, most the skin behind her head is now raw and pink. I don't know what else I can try other than seperate them. Any advice???


