Fisheries scientists classify fish deaths into two categories: natural and fishing mortality. Natural mortality is the rate at which fish die due to causes unrelated to fishing. Sources of natural mortality may include predation, disease, habitat insufficiencies (e.g....

Fish size is an important aspect of any fishery, whether recreational or commercial. Recreational fishers want to catch bragging size trophies or fish big enough to justify cleaning them. Commercial fishers may also target fish to match consumer demand. Many anglers be...

Some of the most important information in managing living natural resources comes from learning the ages of individuals within population. Age information is important for determining when an organism can reproduce, the rate at which organisms perish, and the success o...

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