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Where to Fish in Saltwater
To locate fish you must first learn to think like a fish. Saltwater fish are usually found where there is food, oxygen, and oftentimes cover (ie a place to hide or ambush prey), but to catch them, one of the first things you need to learn is where they are and why they are there.
Not all fish can live in the same kind of waters. Fish can tolerate different environmental conditions, including different:
- Amounts of salt
- Amounts of oxygen
- Types and amounts of food
- Water temperature
- Hiding areas (cover and the bottom)
- Breeding areas
Salinity (Amount Of Salt)
One major factor that separates fish is salt. Some fish cannot live in areas where there is much salt and others need salt in the water to live. However, some fish can live in both saltwater and freshwater!
Many kinds of fish live in the salty water of the oceans. A fish’s kidney keeps the proper balance of salt in its body. Popular saltwater fish are bluefish, cod, flounder, striped bass (also found in freshwater), sea trout, tarpon, tuna, halibut, rockfish, sea perch, lingcod, and yellowtail.
An estuary is where fresh water streams and rivers meet the salt water from the ocean. The amount of salt (salinity) changes daily with the flow of tides, rain, or drought. This water is termed "brackish." Changes in the amount of salinity will determine which fish can live in the area. Species found in these waters include redfish, sea trout, snook and striped bass.
Some fish live in saltwater, but swim up streams and rivers to spawn (lay their eggs). These fish are called anadromous fish. They include shad, salmon, and some types of trout.
Without an adequate supply of oxygen in the water, fish cannot survive. Fish such as carp can live on less oxygen than fish like trout. What can affect the amount of oxygen in the Water? Living plants within a lake or stream add oxygen to the water through photosynthesis - the process of using sunlight to make food. Oxygen can also enter water from the surrounding air. In a stream, moving water tumbling over rocks picks up oxygen from the air.
Decaying plants use oxygen from the water to decompose. Pollution of many kinds reduces oxygen in water. Chemicals dumped into water trap oxygen and take it out of the natural system. Thermal pollution, the heating of water through industrial use, reduces the amount of oxygen water can hold.
The amount and type of food available plays an important role in which fish will be present in a body of water. The amount of competition with other fish is also a factor.
Each fish has a different range of water temperature in which it can survive. Some fish can live in a wide range of temperatures, but trout require cold water. Although fish cannot always find the exact temperature they prefer, they are usually found in water close to that temperature.
Fish must have water with adequate oxygen in which to live. Good-quality water will support more species of fish and greater populations of fish than polluted water. Water that is stagnant, polluted, or lacking adequate oxygen will not support large numbers of fish.
Water quality affects fish species differently. Some fish can live in poorer water conditions than others. For example, carp can live in water that trout could not tolerate.
Cover such as aquatic plants, rocks, logs, or any other type of cover is a requirement for many fish. Fish choose certain types of cover for two main reasons. First, it provides them with protection from enemies. Second, it puts them in the best possible position from which to catch an unsuspecting meal that is drifting or swimming by.
Copy courtesy of the Future Fisherman’s Foundation, www.Futurefisherman.org
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