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These fish have a large brain size and unusually high intelligence. ... Mormyromast, a type of electroreceptor found only in mormyrid fishes Elephantfish ...
Mormyromast, a type of electroreceptor found only in the skin of Mormyrid fishes These fish have two types of tuberous electroreceptor: [ note 2 ] the Knollenorgan [ 43 ] and the Mormyromast . [ 44 ] [ 45 ] Both organs are found in adult individuals, where they are lightly covered by epithelial cells and skin, while their sensitivity ranges ...
The unusual high brain energy consumption percentage of mormyrinae fish is thus due to them having the unusual combination of a large brain in a low energy consuming body. [1] The actual energy consumption per unit mass of its brain is not in fact particularly high and indeed lower (2.02 mg g 1 h 1 ) than that in some other fish such as ...
Other names in English include elephantnose fish, long-nosed elephant fish, and Ubangi mormyrid, after the Ubangi River. The Latin name petersii is probably for the German naturalist Wilhelm Peters. The fish uses electrolocation to find prey, and has the largest brain-to-body oxygen use ratio of all known vertebrates (around 0.6). [2]
In mormyrid fish (a family of weakly electrosensitive freshwater fish), the cerebellum is considerably larger than the rest of the brain put together. The largest part of it is a special structure called the valvula , which has an unusually regular architecture and receives much of its input from the electrosensory system.
The elephantnose fish is a weakly electric mormyrid fish which generates an electric field with its electric organ and then uses its electroreceptive knollenorgans and mormyromasts to locate nearby objects by the distortions they cause in the electric field.
Bronze figurine of Oxyrhynchus fish, Late Period-Ptolemaic Egypt The Medjed was a sacred fish in Ancient Egypt. At the city of Per-Medjed, better known as Oxyrhynchus, whose name means "sharp-nosed" after the fish, archaeologists have found fishes depicted as bronze figurines, mural paintings, or wooden coffins in the shape of fishes with downturned snouts, with horned sun-disc crowns like ...
Mormyrus longirostris, commonly referred as the eastern bottle-nosed mormyrid, is a medium-sized ray-finned fish species belonging to the family Mormyridae. It was originally described by Wilhelm Peters in Monatsberichte der Akad. Wiss. Berlin , 1852.