Sea lamprey
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The sea lamprey is a parasitic lamprey native to the Northern Hemisphere. It is sometimes referred to as the "vampire fish".
Petromyzon marinus.001 Aquarium Finisterrae
Petromyzon marinus 2
Two sea lamprey preying on a brown trout
Sea lamprey drawn by H. L. Todd
Fish migration
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Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over di
Sea lamprey
…Portugal, north-northwest of Spain, and west–southwest of France). These countries also support the main fisheries of the species. Sea lampreys are anadromous; from their lake or sea habitats, they migrate up rivers to spawn. Females deposit a large number of eggs in nests made by males in the substrate of…
Many species of salmon are anadromous and can migrate long distances up rivers to spawn
Life cycle of anadromous fish. From a U.S. Government pamphlet. (Click image to enlarge.)
Auklet flock Shumagins 1986
Antennarius striatus