Koi gifted to cafe now making a good recovery

We were looking after a number of fish for a friend he had major problems.the pond was a new installation,fish where damaging themselves and getting sick.

There was a lack of filtration causing sickness amongst the fish deaths were happening on a daily basis. So they came to us but only one of the fish survived which happened to be one of the 70cm Koi.
Our friend called round and gave us the fish which was a nice surprise so he will become a feature fish at the cafe. He was moved out of the hospital tank and is now in the larger pond with the other fish.