Small pond fish

Looking to rehome a small pond fish we inherited from the previous owners of our house. Unfortunately they just left the fish without telling us so we only realised after we’d moved in and they left no forwarding address. The condition of the pond the fish is currently in is pretty poor and I have no idea what species of fish it is. To be honest we don’t know how to look after or want the fish so if someone was willing to take it that would be great!