The Koi Doctor'Your guide to keep a healthy koi' The Koi Doctor is an essential overview of all aspects of koi keeping. This guide is intended for hobbyists who care deeply about their ornamental fish. The innumerable tips in this book are indispensable for anyone who wants to keep their koi in the best conditions possible. Maarten Lammens is one of the few European vets who have specialised in fish. He combines over eight years of practical and theoretical