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An electric fish is any fish that can generate electric fields, whether to sense things around them, for defence, or to stun prey. Most fish able to produce shocks are also electroreceptive, meaning that they can sense electric fields. The only exception is the stargazer family (Uranoscopidae). Electric fish, although a small minority of all ...
Electrofishing. Scientists carrying out a population and species survey using electrofishing equipment. Electrofishing is a fishing technique that uses direct current electricity flowing between a submerged cathode and anode. This affects the movements of nearby fish so that they swim toward the anode, where they can be caught or stunned.
Chumming the water for great white sharks at Guadalupe Island. Chumming (American English from Powhatan) [1] is the blue water fishing practice of throwing meat-based groundbait called "chum" into the water in order to lure various marine animals (usually large game fish) to a designated fishing ground, so the target animals are more easily caught by hooking or spearing.
Gymnarchus niloticus – commonly known as the aba, aba aba, frankfish, freshwater rat-tail, poisson-cheval, or African knifefish – is an electric fish, and the only species in the genus Gymnarchus and the family Gymnarchidae within the order Osteoglossiformes. It is found in swamps, lakes and rivers in the Nile, Turkana, Chad, Niger, Volta ...
Mormyrinae. Petrocephalinae. The Mormyridae, sometimes called "elephantfish" (more properly freshwater elephantfish), are a superfamily of weakly electric fish in the order Osteoglossiformes native to Africa. [1] It is by far the largest family in the order, with around 200 species. Members of the family can be popular, if challenging, aquarium ...
The jamming avoidance response (JAR) was discovered by Akira Watanabe and Kimihisa Takeda in 1963. The fish they used was an unspecified species of Eigenmannia, which has a quasi- sinusoidal wave discharge of about 300 Hz. They found that when a sinusoidal electrical stimulus is emitted from an electrode near the fish, if the stimulus frequency ...
Electric catfish (centre) in Mastaba of Ti bas-relief, Saqqara, ancient Egypt [8] The electric catfish of the Nile was well known to the ancient Egyptians. [9] The Egyptians reputedly used the electric shock from them when treating arthritis pain. [10] They would use only smaller fish, as a large fish may generate an electric shock from 300 to ...
Synonyms [ 1] Marcusenius isidori (Valenciennes, 1846) Pollimyrus isidori is a species of electric fish in the family Mormyridae, found in the rivers of Gambia, Bénoué, Senegal, Niger, Volta, Chad, Nile and the coastal banks of several rivers in the Ivory Coast; [ 2] it can reach a size of approximately 90 mm. [ 3][ 4]
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