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Diagnostic Description

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Diagnosis: males with long (> 0.1 mm, up to 0.3 mm) tubercles on dorsal and lateral surfaces of head, females with comparatively longer (ca. 0.05 mm vs 0.02 mm) tubercles than congeners (Ref. 52369, 81251). Adipose fin very long, its base 34.6-37.9% SL; body without numerous dark brown elongate spots; caudal peduncle slender, its depth 7.1-7.8% SL (Ref. 81251). Anterior edge of pectoral spine with antrorse serrations; caudal fin rounded (Ref. 52369, 81251).Description: body compressed; predorsal profile gently convex, postdorsal body sloping gently ventrally; head depressed and broad, acutely rounded when viewed laterally and with rounded snout margin when viewed from above; eye ovoid, horizontal axis longest; mouth inferior and crescent-shaped; lips plicate; maxillary barbels long and slender, extending to just beyond base of last pectoral-fin ray; inner mandibular-barbel origin close to midline, extending to base of pectoral spine and with 2 short, thin branches on anterior half and 3-5 long, thin branches on posterior half; outer mandibular barbel originates posterolateral of inner mandibular barbel, extending to middle of pectoral-fin base and with 3-5 long, thin branches; gill openings narrow, extending from immediately ventral to posttemporal to immediately ventral to base of pectoral spine; dorsal fin located at anterior third of body, with convex margin; dorsal-fin spine long, stout and straight, smooth on both anterior and posterior margins; adipose fin long, extending for most of postdorsal distance; margin slightly convex for entire length and posterior end deeply incised; caudal fin rounded, with i,6,6,i principal rays; anal-fin base located ventral to posterior half of adipose fin, with iv,7-8 rays and convex margin; pelvic-fin origin at vertical ventral to posterior end of dorsal-fin base, with slightly convex margin; pectoral-fin spine slightly curved and stout; anterior spine margin with 12-35 small serrations along entire length of spine, serrations antrorse on distal two-thirds and anteriorly directed on proximal third; posterior spine margin with 9-13 strong serrations along entire length; lateral line complete and midlateral (Ref. 52369). Coloration: dorsal and lateral surfaces of head and body brownish gray, fading to dirty cream on ventral third of body, belly, and ventral surface of head in preserved specimens; snout with a series of cream spots delineating anterior and posterior nares; cheek region with 1-2 cream spots immediately ventral to orbit; cream band encircling nape at supraoccipital; dorsal third of body with series of 4 cream vertical bar-shaped marks extending beyond lateral midline of body: 1st at middle of dorsal-fin base, 2nd at adipose-fin origin, 3rd at middle of adipose-fin base and last on caudal peduncle immediately posterior to adipose fin; ventral third of flanks with a longitudinal series of 6-8 cream spots or vertical bar-shaped marks; pectoral and pelvic fin rays with brownish gray spots arranged in 2-3 bands; dorsal-, anal- and caudal-fin rays brownish gray, with hyaline interradial membranes; coloration of juveniles similar, except for being more brown than gray dorsally, a cream belly with brown spotting on posterior half, and dorsal-, anal- and caudal-fin rays with brown spots arranged in 1-2 bands (Ref. 52369).
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Recorder
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Morphology

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Dorsal spines (total): 2; Dorsal soft rays (total): 7; Analspines: 0; Analsoft rays: 11 - 12; Vertebrae: 36 - 37
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Trophic Strategy

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Found in a fast-flowing creek over a rock/pebble substrate (Ref. 52369).
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Biology

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Found in a fast-flowing creek over a rock/pebble substrate (Ref. 52369).
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Microsynodontis hirsutus ( Catalan; Valencian )

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Microsynodontis hirsutus és una espècie de peix de la família dels mochòkids i de l'ordre dels siluriformes.

Morfologia

Els mascles poden assolir els 6,8 cm de llargària total.[4]

Distribució geogràfica

Es troba a Àfrica: Gabon.[4]

Referències

  1. uBio (anglès)
  2. Boulenger G. A. 1903. On the fishes collected by Mr. G. L. Bates in southern Cameroon. Proc. Zool. Soc. Lond. 1903, v. 1 (pt 1). 21-29.
  3. BioLib (anglès)
  4. 4,0 4,1 FishBase (anglès)

Bibliografia

  • Burgess, W.E. 1989. An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City (Estats Units). 784 p.
  • Eschmeyer, William N.: Genera of Recent Fishes. California Academy of Sciences. San Francisco (Estats Units). iii + 697. ISBN 0-940228-23-8 (1990).
  • Eschmeyer, William N., ed. 1998. Catalog of Fishes. Special Publication of the Center for Biodiversity Research and Information, núm. 1, vol. 1-3. California Academy of Sciences. San Francisco, Califòrnia, Estats Units. 2905. ISBN 0-940228-47-5.
  • Ferraris, Carl J.: Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa, 1418. 8 de març del 2007. ISBN 978-1-86977-058-7. PDF (anglès)
  • Glaser, U., 2000. Aqualog Photo Collection 1 - African Catfishes Verlag A.C.S. GmbH. ISBN 3-931702-57-X.
  • Gosse, J.-P., 1986. Mochokidae. p. 105-152. A J. Daget, J.-P. Gosse i D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussel·les, MRAC, Tervuren; i ORSTOM, París. Vol. 2.
  • Helfman, G., B. Collette i D. Facey: The diversity of fishes. Blackwell Science, Malden, Massachusetts (Estats Units), 1997.
  • Moyle, P. i J. Cech.: Fishes: An Introduction to Ichthyology, 4a edició, Upper Saddle River, Nova Jersey, Estats Units: Prentice-Hall. Any 2000.
  • Nelson, J.S. 2006: Fishes of the world. Quarta edició. John Wiley & Sons, Inc. Hoboken, Nova Jersey, Estats Units. 601 p.
  • Ng, H. H. 2004. The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species. Zootaxa Núm. 531: 1-52.
  • Paugy, D. i T.R. Roberts, 1992. Mochokidae. p. 500-563. A C. Levêque, D. Paugy, i G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres d'Afrique de l'Ouest. Vol. 2. Coll. Faune Tropicale núm. 28. Musée Royal de l'Afrique Centrale, Tervuren, Bèlgica i O.R.S.T.O.M., París, França.
  • Paugy, D. i T.R. Roberts, 2003. Mochokidae, p. 195-268 a C. Lévêque, D. Paugy i G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, vol. 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Flandes, Museum National d'Histoire Naturalle, París, França i Institut de Recherche pour le Développement, París, França. 815 p.
  • Vigliotta, T.R., 2008. A phylogenetic study of the African catfish family Mochokidae (Osteichthyes, Ostariophysi, Siluriformes), with a key to genera. Proc. Acad. Nat. Sci. Philad. 157(1): 73-136.
  • Wheeler, A.: The World Encyclopedia of Fishes, 2a edició, Londres: Macdonald. Any 1985.


Enllaços externs

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Microsynodontis hirsutus: Brief Summary ( Catalan; Valencian )

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Microsynodontis hirsutus és una espècie de peix de la família dels mochòkids i de l'ordre dels siluriformes.

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Microsynodontis hirsuta

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Microsynodontis hirsuta is a species of upside-down catfish endemic to Gabon where it occurs in the Ntem River.[2] It was first described in 2004 by Ng Heok Hee.[3]

Taxonomy

Before 2004, the genus Microsynodontis was believed to contain only four species, Microsynodontis batesii, M. christyi, M. lamberti, and M. polli.[3] However, when examining previously collected specimens from the lower Guinea region that had been identified as M. batesii, Dr. Ng discovered that the specimens actually consisted of nine distinct species, eight of them previously undescribed.[3] He published the descriptions of the new species in 2004. M. hirsuta is one of the new species that he described. Although the eight new species have been accepted by the scientific community, there is still some dispute among scientists as to whether the newly described species are actually separate species as the species are extremely difficult to tell apart.[1]

Description

M. hirsuta is a small fish, reaching a maximum standard length of 6.8 centimeters (2.7 in).[2] The mouth of the fish faces downward, with broad lips containing papilla.[4] The fish has three pairs of barbels. The maxillary barbels are on located on the upper jaw, and two pairs of mandibular barbels are on the lower jaw.[5] The front edges of the dorsal fins and the pectoral fins are hardened into stiff spines that can be locked into place.[5] The body shape is cylindrical along its entire length.[4]

M. hirsuta can be distinguished from other members of the genus Microsynodontis by examining the dorsal spine, and the Tubercles on the head. The dorsal spine is straight, whereas all other species in the genus have gently curved spines. The tubercles on the head are larger than other species in the genus, with an average length of 0.3 millimeters (0.012 in), where other species in the genus of the same size have tubercles that average 0.05 millimeters (0.0020 in) in length. In addition, the adipose fin is longer than other members of the genus.[3]

References

  1. ^ a b Moelants, T. (2010). "Microsynodontis hirsuta". IUCN Red List of Threatened Species. 2010: e.T181559A7678258. doi:10.2305/IUCN.UK.2010-3.RLTS.T181559A7678258.en. Retrieved 19 November 2021.
  2. ^ a b Froese, Rainer; Pauly, Daniel (eds.) (2016). "Microsynodontis hirsuta" in FishBase. June 2016 version.
  3. ^ a b c d Ng, Heok Hee (2004). "The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species" (PDF). Zootaxa. 531: 1–52.
  4. ^ a b John P. Friel & Thomas R. Vigliotta (March 2, 2009). "Mochokidae Jordan 1923: African squeaker and suckermouth catfishes". Tree of Life Web Project. Retrieved 3 November 2016.
  5. ^ a b Nelson, Joseph S. (2006). Fishes of the World. John Wiley & Sons, Inc. ISBN 0-471-25031-7. OCLC 224053746.
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Microsynodontis hirsuta: Brief Summary

provided by wikipedia EN

Microsynodontis hirsuta is a species of upside-down catfish endemic to Gabon where it occurs in the Ntem River. It was first described in 2004 by Ng Heok Hee.

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Microsynodontis hirsuta ( Spanish; Castilian )

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Microsynodontis hirsuta es una especie de peces de la familia Mochokidae en el orden de los Siluriformes.

Morfología

• Los machos pueden llegar alcanzar los 6,8 cm de longitud total.[1]

Hábitat

Es un pez de agua dulce.

Distribución geográfica

Se encuentran en África: Gabón.

Referencias

  1. FishBase (en inglés)

Bibliografía

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Microsynodontis hirsuta: Brief Summary ( Spanish; Castilian )

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Microsynodontis hirsuta es una especie de peces de la familia Mochokidae en el orden de los Siluriformes.

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Microsynodontis hirsuta ( Basque )

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Microsynodontis hirsuta Microsynodontis generoko animalia da. Arrainen barruko Mochokidae familian sailkatzen da.

Banaketa

Erreferentziak

  1. Froese, Rainer & Pauly, Daniel ed. (2006), Microsynodontis hirsuta FishBase webgunean. 2006ko apirilaren bertsioa.

Ikus, gainera

(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
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Microsynodontis hirsuta: Brief Summary ( Basque )

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Microsynodontis hirsuta Microsynodontis generoko animalia da. Arrainen barruko Mochokidae familian sailkatzen da.

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Microsynodontis hirsuta ( Dutch; Flemish )

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Vissen

Microsynodontis hirsuta is een straalvinnige vissensoort uit de familie van de baardmeervallen (Mochokidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 2004 door Ng.

Bronnen, noten en/of referenties
  1. (en) Microsynodontis hirsuta. FishBase. Ed. Ranier Froese and Daniel Pauly. 02 2013 version. N.p.: FishBase, 2013.
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27-02-2013
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糙身細歧鬚鱨 ( Chinese )

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二名法 Microsynodontis hirsuta
Ng, 2004

糙身細歧鬚鱨,為輻鰭魚綱鯰形目倒立鯰科的其中一,為熱帶淡水魚,分布於非洲加彭Ntem河流域,體長可達6.8公分,棲息在礫石底質的溪流底中層水域,生活習性不明。

参考文献

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糙身細歧鬚鱨: Brief Summary ( Chinese )

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糙身細歧鬚鱨,為輻鰭魚綱鯰形目倒立鯰科的其中一,為熱帶淡水魚,分布於非洲加彭Ntem河流域,體長可達6.8公分,棲息在礫石底質的溪流底中層水域,生活習性不明。

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