My pike cichlid has hole in the head and for the last three weeks and I've been treating with metro+ and salt all the water perimeters are fine as water is replaced every three days. He's only been getting worse and has also stopped eating so I decided to start treating with methylene blue ( he's starting to develop fungus ), searchem paragaurd for lesions as well as continuing metro+ and salt. He is now belly up but seems to have more energy and is breathing more strongly. Any advise on how to fix this would be appreciated.