Fish Oxygen
Oxygen Fish need energy to move, to find and requirements digest food, to grow, and to reproduce in addition to maintaining the body and internal environment. Energy stored in their food must be metabolically converted to power for these various bodily functions. Oxygen, along with an organic substrate, is needed for all oxidative metabolic processes. Oxidative (or aerobic) metabolic pathways are dominant in organisms which have a fairly reliable oxygen source because they are bio-chemically more efficient than anaerobic pathways. The amount of oxygen which a fish requires for these processes over a given length of time is called its oxygen consumption rate. Oxygen consumption rate can be affected by a variety of factors. Three of the most significant of these are body weight, level of activity, and environmental temperature. In general, larger fish use more total oxygen per hour than smaller fish, although per unit body weight, smaller fish use more oxy-n than larger specimens. In similar manner, swimming fish use moneymen than resting animals