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
Fish ladder — Fishways, most commonly called fish ladders but also known as fish passes and in Australia also referred to as fish steps, are structures on or around artificial barriers (such as dams and weirs) to facilitate diadromous fishes natural migration … Wikipedia
fish migration — žuvų migracija statusas T sritis ekologija ir aplinkotyra apibrėžtis Žuvų plaukimas į kitas vietas neršti, maitintis, žiemoti. Dauguma migruojančių žuvų gyvena jūrose, o neršti plaukia į upes, seklumas, arčiau krantų. atitikmenys: angl. fish… … Ekologijos terminų aiškinamasis žodynas
Fish locomotion — The prevailing type of fish locomotion is swimming in water. In addition, some fish can walk , i.e., move over land, burrow in mud, and glide through the air. Contents 1 Swimming 1.1 Body/caudal fin propulsion 1.1.1 Anguilliform locomotion … Wikipedia
Fish scale — For other uses, see Fish scale (disambiguation). The cycloid scales of a common roach (Rutilus rutilus). The row of lateral line scales is visible in the lower half of the image. The skin of most bony and cartilaginous fishes are covered by… … Wikipedia
fish ladder — noun A structure built on or around dams or locks to faciliate the migration of fish. Syn: fishway, fish pass, fish steps … Wiktionary
Migration — Migration, Migratory behavior, or Migratory may refer Gene migration, a process in evolution and population genetics Animal migration, the travelling of long distances in search of a new habitat Human migration, physical movement by humans from… … Wikipedia
Migration Des Oiseaux — La migration des oiseaux est un mouvement régulier observé chez de très nombreuses espèces d oiseaux. Ce déplacement est, par exemple, une manière pour ces espèces d échapper à un changement d habitat ou une baisse de disponibilité de nourriture… … Wikipédia en Français
Migration aviaire — Migration des oiseaux La migration des oiseaux est un mouvement régulier observé chez de très nombreuses espèces d oiseaux. Ce déplacement est, par exemple, une manière pour ces espèces d échapper à un changement d habitat ou une baisse de… … Wikipédia en Français
fish|wheel — «FIHSH HWEEL», noun. U.S. = salmon wheel: (Cf. ↑salmon wheel) »A good number of chum salmon end their inward migration up the Tanana river in fishweels (Fairbanks, Alaska Daily News Miner) … Useful english dictionary
