Please draw a realistic image of a kappa sitting by a river。Kappa have green ski

Please draw a realistic image of a kappa sitting by a river。Kappa have green skin、It has a turtle-like shell on its back。There is a small plate on the top of the head、There is water there。The kappa's face has a slightly innocent look.、holding a small fish in hand。The background is the natural scenery of Japan.、The clear water of the river flows quietly。The kappa's appearance is realistic and detailed.、Make sure its unique features are clearly visible。