Acknowledgments
We thank Professor Mark A. Sheridan (North Dakota State University, Fargo, North Dakota) for offering advice on the discussion of GH receptors in fish; Professors Robert H. Devlin (Fisheries and Oceans Canada, Vancouver, Canada) and Garth L. Fletcher (Memorial University of Newfoundland, Newfoundland and Labrador, Canada) for their helpful comments on the GH-transgenic fish; and Ashley VanCott, Editor in Chief of Cinder Services (http://cinderservices. wordpress.com/), for improving and correcting the English of the manuscript.