Mormyridae

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Mormyridae

[mȯr′mir·ə‚dē]
(vertebrate zoology)
A large family of electrogenic fishes belonging to the Osteoglossiformes; African river and lake fishes characterized by small eyes, a slim caudal peduncle, and approximately equal dorsal and anal fins in most.

Mormyridae

 

a family of fish of the order Mormyriformes. The body measures up to 1.5 m long. The snout is extended in a tube and is sometimes bent downward, enabling the fish to extract from the soil the invertebrates on which it feeds. Mormyrs live in fresh bodies of water in Africa. There are several genera (such as Mormyrus and Gnathonemus), comprising more than 30 species. Some representatives of the genus Mormyrus have electric organs on the sides of their tails, which serve for signaling (impulses are sent with different frequencies and received by other individuals). Mormyrs have commercial value.

References in periodicals archive ?
Control of gonadal maduration and regression by experimental variation of environmental factors in the mormyrid fish, Mormyrus rume proboscirostris.
Distribution of noradrenaline-immunoreactivity in the brain of the mormyrid teleost Gnathonemus petersii.
2]R occurring not only in key motor telencephalic areas but also in mesencephalic and cerebella regions of the mormyrid electric fish (Han et al.
Unlike the female mormyrid fish, few of us like electric shocks.
Shifts in frequency tuning in androgen-treated mormyrid fishes.
Both of them belong to the weakly electric mormyrid group of fishes that German and USA scientists had shown able to communicate with each other using varying pulses of high frequency electricity from organs in their tails.
The species feeds on insect larvae, especially Diptera and Trichoptera, and is the only upper Zambezi mormyrid that feeds extensively on zooplankton.
Ikomi (1996) noted similar occurrence in the mormyrid Brienomyrus longianalis in the upper Warri River.
The diet of this species in the upper Zambezi consisted primarily mormyrids, followed by cichlids; small specimens (15cm SL) consumed more Barbus spp.
Squeakers or small catfish, and Mormyrids - also known as elephantfish - hunt at night by emitting tiny electrical charges, but live in fear of a far larger predator.
Tilapia species were consumed with the highest frequency (18%), followed by Synodontis or catfish (14%) and mormyrops or mormyrids (11%).
odoe is piscivorous, feeding on several species of smaller fish by laying ambush in dense vegetation, and they feed primarily on cichlids and mormyrids [4].