Gymnotus carapo Linnaeus, Taxonomic (Download Help) Gymnotus carapo TSN Notes: Reference for: Gymnotus carapo, banded knifefish . The banded knife fish Gymnotus carapo is among the most widely distributed, broadly adapted (eurytopic), and phenotypically variable fish species in South. Download scientific diagram | Geographic variation in Gymnotus carapo. from publication: Seven new species of the Neotropical electric fish Gymnotus (Teleo- .

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You must be logged in to post a comment. The strength and details of this pattern varies, both individually and depending on region. Gymnotoidei from Middle America, with a key to species of Gymnotus”. We use multivariate statistics to quantify phenotypic differences within and among subspecies and species in aspects of pigmentation, caliper-based morphometrics, geometric morphometrics, meristics, and osteology. A very widespread species in both Central and South America.

User Username Password Remember me. Sign our Guest Book. Possible tankmates include large, robust cichlids such as Cichla or Geophagus sp. You can sponsor this page. This species, as with all Gymnotiformes, is an electric fish that has the capability to generate weak electric charges, and then measure the disturbance in the field of electricity created.

Banded knifefish – Wikipedia

Our results demonstrate significant, but not diagnostic, differences among specimens representing seven new subspecies: Also responds to vibratory stimuli water waves: Revision of the polytypic electric fish Gymnotus carapo Gymnotiformes, Teleosteiwith descriptions of seven subspecies.

This page was last edited on 13 Julyat Found also gymnootus shallow edges of streams Ref. Mouth brooding by males is observed in this species Ref.


This system is used for navigation, finding prey and communicating with other G. A review found that these were insufficient for recognizing the populations as separate gynmotus, but did recommend recognizing them as subspecies: Gymnotidae Weakly electric fish Fish described in The male takes care of the young by mouth broodingand making and watching over a “nest”, a depression in the bottom where the female lays the eggs.

Banded Knifefish

These results support the use of the subspecies, but not the species, rank to recognize and name these regionally delimited taxonomic entities. With these, the fish can sense the tiniest of movements as the field around it is disturbed, and navigate in total darkness, useful skills when hunting prey or avoiding predators in the dark. Article Tools Print this article. Parental care is provided by the male. The banded knife fish Gymnotus carapo is among the most widely distributed, broadly adapted eurytopicand phenotypically variable fish species in South America, with a geographic range of about 14 million km 2from the Llanos of Venezuela cafapo the Pampas of northern Argentina.

Dried foods are not usually accepted.

Old illustrations uppermost showing shape well, lower typical colors. This map was computer-generated and has not yet been reviewed.

It also possesses electroreceptors, which allow the fish to receive electrical signals. Email the author Login required. Main reference Upload your references References Coordinator: More larvae are spread out in leaf litter up to 2 m away Ref. Freshwater; benthopelagic; pH range: However, it is not known from deep river channels. From Wikipedia, the free encyclopedia. The male sits on a depression with its anal fin expanded horizontally guarding a cluster of larvae.


Tends to inhabit sluggish or still waters and seems to prefer turbid environments. How to cite item. There are also some morphometric variations depending on location. Estimates of some properties based on models Phylogenetic diversity index Ref. Males provide parental care in nests excavated for eggs and larvae Ref. Can survive when ditches, canals and small ponds dry out.

Keywords Pisces, Alpha taxonomy, biodiversity assessment, species delimitation, taxonomic inflation. Relationship between EOD pattern and agonistic behavior in this species has been demonstrated Refs. Here we assess the structure of phenotypic variation in G. Uses its long anal fin for locomotion. Inhabits turbid slow moving or standing waters Ref. Feed live and frozen foods such as bloodwormprawns, earthworms, tubifex etc. Central and South America: Medium, minimum population doubling time 1.

Sounds Ciguatera Speed Swim. This allows the fish to survive in polluted or hypoxic oxygen-deficient environments, and also comes in useful when waters cagapo at the end of the wet season if the fish becomes stranded, for example.

Shows auditory abilities, responding best to a frequency of Hz, with an upper limit above Hz Ref. Gymnotus carapo Linnaeus It also has a modified swimbladder that acts as an accessory breathing organ.

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