spawning migration

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• spawning migration — the movement of fishes from feeding or overwintering areas to the spawning area …   Dictionary of ichthyology

• migration — migrational, adj. /muy gray sheuhn/, n. 1. the process or act of migrating. 2. a migratory movement: preparations for the migration. 3. a number or body of persons or animals migrating together. 4. Chem. a movement or change of position of atoms… …   Universalium

• Fish migration — Many species of salmon are anadromous and migrate long distances up rivers and streams to spawn. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres… …   Wikipedia

• Diel vertical migration — Diel vertical migration, also known as diurnal vertical migration, is a pattern of movement that some organisms living in the ocean and in lakes undertake each day. Usually organisms move up to the epipelagic zone at night and return to the… …   Wikipedia

• skipped spawning — sexually mature fish that do not spawn every year. The reasons vary but usually relate to poor conditions. However the reason can be increased food availability which is then used for growth, as well as decreased food availability not providing… …   Dictionary of ichthyology

• Spawn (biology) — The spawn (eggs) of a clownfish. The black spots are the eyes developing. Spawn refers to the eggs and sperm released or deposited, usually into water, by aquatic animals. As a verb, spawn refers to the process of releasing the eggs and sperm,… …   Wikipedia

• Kobuk River — The Kobuk River is approximately convert|280|mi|km|0|lk=on long, located in the Arctic region of northwestern Alaska in the United States. [USGS Geographic Names Information System (GNIS). [http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO… …   Wikipedia

• salmoniform — ▪ fish Introduction       any member of the order Salmoniformes, a diverse and complex group of fishes. The order consists of about 1,000 species in the freshwaters and in the oceans of the world. Included are the familiar trout, salmon, and pike …   Universalium

• Capelin — This article is about the fish. For the plant genus, see Mallotus (plant). Capelin Scientific classification Kingdom: Animalia …   Wikipedia

• Shorthead Redhorse — (Moxostoma macrolepidotum) Scientific classification Kingdom …   Wikipedia

• Cod fisheries — Atlantic cod Pacific cod Cod f …   Wikipedia