WFSC 448 Fish Ecophysiology Quiz 1 What are 8 unique properties of water that set the stage for fish performance in this medium? List but define. Where possible, state implications for a physiological system in fish. Example not discussed much in class: 9. The optical properties of water. Red light is quickly absorbed in upper water layers whereas green and blue penetrate further. What would be an ecological consequence of this differential absorbance?