I just recently bought myself a silver arowanas and put him in my 105 gallon fish tank with a jack Dempsey and a few other fish. I've had arowana before but he passed away. Once I put my new one in everything seemed okay. When I went to check on him in the morning he was beatin up beyond beilife. All fins are shredded and broke. He's staying straight up and down but is still breathing but cannot swim. He seems to have a broken back. Agin. SERVERLY damaged. Is there anything I can do to save my fish?! Please help!