gymnotus造句

• Species of " Gymnotus " range from about in total length.
• Species of " Gymnotus " reach up to about 100 cm in length.
• Some " Gymnotus " species live in the leaf litter and root tangles of river banks.
• Michael Faraday extensively tested the electrical properties of a " Gymnotus " specimen, imported from Suriname.
• ""'Gymnotus " "'is a genus of fish in the order Gymnotiformes found widely in the Neotropics, including the Amazon.
• Several species are broadly adapted to live in both of these habitats . " Gymnotus " species are nocturnal predators feeding on insects, crustaceans, and other fish.
• These predators sense electric fields, but only at low frequencies, thus certain species of Gymnotiformes, such as those in " Gymnotus ", have shifted the frequency of their signals so they can be effectively invisible.
• The most common predators of Gymnotiformes include the closely related Siluriformes ( catfish ), as well as predation within families ( " E . electricus " is one of the largest predators of " Gymnotus " ).
• A few species are familiar to the aquarium trade, such as the black ghost knifefish ( " Apteronotus albifrons " ), the glass knifefish ( " Eigenmannia virescens " ), and the banded knifefish ( " Gymnotus carapo " ).
• Each species of " Mormyrus " ( family : Mormyridae ) and " Gymnotus " ( family : Gymnotidae ) have evolved a completely unique waveform that allows the individual fish to identify between species, genders, individuals and even between mates with better fitness levels.
• In some species the waveform is continuous and almost sinusoidal ( for example the genera " Apteronotus ", " Eigenmannia " and " Gymnarchus " ) and these are said to have a wave-type EOD . In other species, the EOD waveform consists of brief pulses separated by longer gaps ( for example " Gnathonemus ", " Gymnotus ", " Leucoraja " ) and these are said to have a pulse-type EOD.