Biology. Following flooding of the river banks (Gambia River), this species builds large elliptical floating nests in densely vegetated swamps at depths of about. Gymnarchus niloticus: osteoglossomorph: Life cycle and reproduction: In contrast , Gymnarchus niloticus (Gymnarchidae) prepares a large floating nest from the. Gymnarchus niloticus: pictures (2). To cite this page: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. The Animal Diversity.

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The dorsal fin is elongated, running along the back of the fish towards the blunt, finless tail, and is the main source of propulsion.

Data from comparative genomic hybridization experiments with some other African Osteoglossiformes species showed that all these species have an advanced stage of sequence divergence.

In other projects Wikimedia Commons Wikispecies. From Wikipedia, the free encyclopedia. Fluorescence in situ hybridization using U2 small nuclear RNA, Rex 6 and some microssatelites as probes showed a scattered distribution among chromosomes. The ADW Team gratefully acknowledges their support. It grows up to 1.

Gymnarchus niloticus

Ezequiel A de Oliveira. Abstract Osteoglossiformes is one of the most ancient Early Triassic nilotiucs of freshwater teleosts and has at least one representative on each continent of the Southern Hemisphere, with the exception of Antarctica. Instead, it navigates and hunts smaller fish using a weak electric field similar to that of the related elephantfish.

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Marcelo de Bello Cioffi.

The simultaneous detection of 18S and 5S ribosomal DNAs showed simple and non-syntenical locations for such sequences, and a Chromomycin A3-positive band was observed, which is co-localized within the 18S ribosomal Gymnxrchus gene sequences. The Animal Diversity Web online. Gymnarchus niloticus — commonly known as the abaaba abafrankfishfreshwater rat-tailpoisson-chevalor African knifefish — is an electric fishand the only species in the genus Gymnarchus and the gymarchus Gymnarchidae within the order Osteoglossiformes.

Connect with us Help gtmnarchus improve the site by taking our survey. Citing articles via Google Scholar. Articles with ‘species’ microformats Commons category link is on Wikidata. Gymnarchus niloticus Conservation status. This page was last edited on 26 Novemberat By using this site, you agree to the Terms of Use and Privacy Policy. Also like the elephantfish, it possesses an unusually large brain, which is believed to help it interpret the electrical signals.

The results highlight the evolutionary diversification of osteoglossiform fishes. First chromosomal analysis in Gymnarchus niloticus Gymnarchidae: Bilateria bilaterally symmetrical animals.

Superclass Gnathostomata jawed vertebrates. Sign Gyymnarchus Forgot password?

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Gymnarchus niloticus – Wikidata

Receive exclusive offers and updates from Oxford Academic. Luiz A C Bertollo. Class Actinopterygii ray-finned fishes. Related articles in Google Scholar.

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ADW: Gymnarchus niloticus: CLASSIFICATION

To cite this page: ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe. It furthers the University’s objective of excellence in research, scholarship, and education by publishing worldwide. Species Gymnarchus niloticus Aba. Oladele Oladele Ilesanmi Jegede. While ADW staff and njloticus provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.

You do not nloticus have access to this article. In this study we provide, for the first time, a comprehensive cytogenetic analysis for G. Wikimedia Commons has media related to Gymnarchus niloticus.

Views Read Edit View history. Oxford University Press is a department of the University of Oxford. You could not be signed in. Help us improve the site by taking our survey. Please see our brief essay. Retrieved 7 January Most users should sign in with their email address. Osteoglossiformes is one of the most ancient Early Triassic groups of freshwater teleosts and has at least one representative on each continent of the Southern Hemisphere, with the exception of Antarctica.

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