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Focuses on the brain energy levels of the African elephant nose fish, Gnathonemus petersii. Use by the fish of half of its oxygen to fuel its brain; Comparisons of the brain energy levels between the fish and humans; Habitat of the fish; Questions on the evolution of the fish's brains.

Provides information on the African Elephantnose Fish's (Gnathonemus petrsii) use of its elongated chin for the process of oxygen consumption, according to Goran Nillson of Uppsala University in Sweden. Consequence of fish's high rate of oxygen consumption; Use of modified muscle cells in generating electric field; Energy demands of fish's brain; Evolution of fish's brain in coping with complex sensory information.