I was recently spring-cleaning my pond and was horrified to discover what I thought was a dead fish. Upon closer inspection, the fish, a golden orfe, was still alive but had a frog firmly attached to it. The frog was clasping it as though it was trying to mate with the fish. I have never seen anything like it. What is going on? I also noticed that several of my other normally healthy fish seem to have sustained injuries. Is a killer frog on the loose?
Clare Dyer, London, UK