Migrations are the large scale moving of species of animals from one location to another. This occurs for a wide range of reasons. Some move due to the changes in the seasons and climate, other move due to the need to reproduce and some go to a region to feed. Some species migrate small distances and some migrate as much as thousands of kilometers. Few types of migration are referred to as anadromous where the fish that usually live in the sea move to fresh water regions just to spawn and lay eggs (salmons are an example of this) and catadromous (eels are an example of this) where the opposite happens and fish move from fresh water regions to the sea water for spawning purposes. In the marine life, fish mostly migrate between three places; their food areas, the spawning regions and their nursery areas. The route they take depends on the food available and the current present all over the ocean.
Some fish migrate due to food. Certain species of fish like salmons live in one area in a large population which means they quickly finish and exhaust the food available in that region and this makes it necessary for them to constantly keep moving in search of food to feed themselves. This is commonly referred to as feeding migrations. For those who want to go on reef fishing charters services at Townsville it is best they learn about the migration times and places as this means they can gain a better result from their fishing adventures.
By going to the right places you can even catch huge and healthy marlins and other hard to find types of fish. If anyone is planning any corporate fishing charters, it is recommended that they check up with the charter company about the best dates and time to do that so that they can get the best returns. There are many companies and people who keep tabs on the migration patterns of every fish. It is of great help for those in the fishing industry and other aspects of the marine industry.
The other type of migration is known as the spawning migration where fishes and other species move to spawning areas which are far away from their normal feeding locations. This is what migratory species like eels where they move to oxygen rich areas for laying eggs. The stage after this is the juvenile migration where the hatched fish migrate vast distances to go back to the feeding areas of their parents. The migration patterns in fresh water is very usually affected by the construction of dams.