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Rapala (/ ˈ r æ p ə l ɑː / RAP-ə-lah) [1] is a fishing product manufacturing company based in Finland. It was founded in 1936 by Lauri Rapala, who is credited for creating the world's first floating minnow lure carved from cork with a shoemaker's knife, covered with chocolate candy bar wrappers and melted photography film negatives, for a protective outer coating. [2]
Today, the original floater is made in seven different sizes and fourteen different colors. It can be found in many anglers' tackle boxes, and is the best-selling lure Rapala makes, and possibly best-selling in the world. The lure, when retrieved, swims with an action that mimics that of a wounded baitfish.
Lauri Rapala (1905–1974) was a Finnish fisherman, inventor and the founder of Rapala-Normark Group, the world's largest fishing lure and tackle producer. He died in 1974 at the age of 69. He died in 1974 at the age of 69.
The German zoologist Carl Sachs was sent to Latin America by the physiologist Emil du Bois-Reymond, to study the electric eel; [62] he took with him a galvanometer and electrodes to measure the fish's electric organ discharge, [63] and used rubber gloves to enable him to catch the fish without being shocked, to the surprise of the local people ...
Fish in the order Gymnotiformes possess electric organs along the length of their bodies and swim by undulating an elongated anal fin while keeping the body still, presumably so as not to disturb the electric field that they generate. Many fish swim using combined behavior of their two pectoral fins or both their anal and dorsal fins.
Pool-and-weir fish ladder at Bonneville Dam on the Columbia River Drone video of a fish way in Estonia, on the river Jägala FERC fish ladder safety sign. A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon, is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as ...
Different fish swim by undulating different parts of their bodies. Eel-shaped fish undulate their entire body in rhythmic sequences. Streamlined fish, such as salmon, undulate the caudal portions of their bodies. Some fish, such as sharks, use stiff, strong fins to create dynamic lift and propel themselves.
Fish migrations involve movements of schools of fish on a scale and duration larger than those arising during normal daily activities. [1] Some particular types of migration are anadromous , in which adult fish live in the sea and migrate into fresh water to spawn ; and catadromous , in which adult fish live in fresh water and migrate into salt ...
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