If you do, your koi will struggle to grow. The first feeding is a special time because it is the start of him bonding with his fish, much like owners do with their dogs. Koi are large messy fish and will quickly pollute anything smaller than a small lake here are best answers from quora also on what do koi fish.
Don't let the pond become overpopulated, or all the fish in the pond will become unhealthy.
Don't let the pond become overpopulated, or all the fish in the pond will become unhealthy. So if you do decide to go out and purchase. Are koi and carp the same thing? Originating from grass carp, generations of breeding for color and shape have yielded the beautiful nishikigoi, or brocaded carp, also commonly called koi.