Helogenes marmoratus: Difference between revisions
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{{Taxobox |
{{Taxobox |
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| name = ''Helogenes marmoratus'' |
| name = ''Helogenes marmoratus'' |
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| status = NE |
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| status_system = iucn3.1 |
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| regnum = [[Animal]]ia |
| regnum = [[Animal]]ia |
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| phylum = [[Chordate|Chordata]] |
| phylum = [[Chordate|Chordata]] |
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| species = '''''H. marmoratus''''' |
| species = '''''H. marmoratus''''' |
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| binomial = ''Helogenes marmoratus'' |
| binomial = ''Helogenes marmoratus'' |
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| binomial_authority = Günther, 1863 |
| binomial_authority = [[Albert Günther|Günther]], 1863 |
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}} |
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'''''Helogenes marmoratus''''' is a species of [[whale catfish]] occurs in [[Brazil]], [[Ecuador]], [[French Guiana]], [[Guyana]], [[Peru]], [[Suriname]] and [[Venezuela]]. It is found in the [[Atlantic]] drainages of the [[Guianas]], the upper [[Orinoco River|Orinoco]] and [[Rio Negro (Amazon)|Rio Negro]] systems, and the upper [[Amazon River basin]]. This species grows to a length of 7.3 cm (2.9 inches).<ref name=marmoratus>{{FishBase species |genus= Helogenes|species= marmoratus| month = December| year = 2011}}</ref> |
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'''''Helogenes marmoratus''''' is a species of [[catfish]] of the family [[Cetopsidae]]. |
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== Ecology == |
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''H. marmoratus'' is nocturnal and feeds mainly on terrestrial insects, particularly ants.<ref name=marmoratus/> It is a typical inhabitant of black or clear waters, usually in forest streams with moderate to swift current flow over firm sand or gravel bottoms .<ref name=marmoratus/> |
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''H. marmoratus'' lives hidden under plants, litter or plant debris.<ref name=marmoratus/> It has a colour pattern that resembles dead leaves. The fish may even lie on its side among the leaf litter as a form of [[camouflage]].<ref name="Sazima"/> It can easily be mistaken as a piece of dead wood when it rests on its side, motionless on the bottom.<ref name=marmoratus/> It often swims on one side in undulating movements.<ref name=marmoratus/> When disturbed, ''H. marmoratus'' will move upwards through the root-tangle, exposing its head or fore body above the water surface. If disturbed further, it will quickly swim in an upright position towards the nearest debris shelter.<ref name="Sazima">{{cite journal|url=http://www.ufrgs.br/ni/vol4num1%5Cvol4(1)p119.pdf|title=Fallen leaves on the water-bed: diurnal camouflage of three night active fish species in an Amazonian streamlet|first=Ivan|last=Sazima|coauthors=Carvalho, Lucélia Nobre; Mendonça, Fernando Pereira; Zuanon, Jansen|journal=Neotropical Ichthyology|volume=4|issue=1|pages=119–122|year=2006|format=[[PDF]]|doi=10.1590/S1679-62252006000100013}}</ref> Also, ''H. marmoratus'' is known to jump on the bank during [[rotenone]] fishing by [[Tukano]] and [[Tuyuka]] [[indigenous people]], then jump back to the stream after water renovation.<ref name="Sazima"/> |
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== References == |
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{{reflist}} |
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{{siluriformes-stub}} |
{{siluriformes-stub}} |
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[[Category:Cetopsidae]] |
[[Category:Cetopsidae]] |
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[[Category:Fish of South America]] |
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[[Category:Fish of Brazil]] |
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[[Category:Fish of Ecuador]] |
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[[Category:Fish of Peru]] |
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[[ca:Helogenes marmoratus]] |
[[ca:Helogenes marmoratus]] |
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Revision as of 15:25, 21 January 2012
| Helogenes marmoratus | |
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| Scientific classification | |
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| Species: | H. marmoratus
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| Binomial name | |
| Helogenes marmoratus Günther, 1863
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Helogenes marmoratus is a species of whale catfish occurs in Brazil, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela. It is found in the Atlantic drainages of the Guianas, the upper Orinoco and Rio Negro systems, and the upper Amazon River basin. This species grows to a length of 7.3 cm (2.9 inches).[1]
Ecology
H. marmoratus is nocturnal and feeds mainly on terrestrial insects, particularly ants.[1] It is a typical inhabitant of black or clear waters, usually in forest streams with moderate to swift current flow over firm sand or gravel bottoms .[1]
H. marmoratus lives hidden under plants, litter or plant debris.[1] It has a colour pattern that resembles dead leaves. The fish may even lie on its side among the leaf litter as a form of camouflage.[2] It can easily be mistaken as a piece of dead wood when it rests on its side, motionless on the bottom.[1] It often swims on one side in undulating movements.[1] When disturbed, H. marmoratus will move upwards through the root-tangle, exposing its head or fore body above the water surface. If disturbed further, it will quickly swim in an upright position towards the nearest debris shelter.[2] Also, H. marmoratus is known to jump on the bank during rotenone fishing by Tukano and Tuyuka indigenous people, then jump back to the stream after water renovation.[2]
References
- ^ a b c d e f Froese, Rainer; Pauly, Daniel (eds.) (2011). "Helogenes marmoratus" in FishBase. December 2011 version.
- ^ a b c Sazima, Ivan (2006). "Fallen leaves on the water-bed: diurnal camouflage of three night active fish species in an Amazonian streamlet" (PDF). Neotropical Ichthyology. 4 (1): 119–122. doi:10.1590/S1679-62252006000100013.
{{cite journal}}: Unknown parameter|coauthors=ignored (|author=suggested) (help)
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