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Data on Catalog of Fishes

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Kenaley, Christopher
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Description

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Females with escal bulb rounded, not compressed, bearing a low rounded or conical distal prolongation nearly always pigmented on tip; anterior and posterior crests absent; integument as described for M. johnsonii; vomerine teeth 0–4; dorsal-fin rays 14 or 15; anal-fin rays 4; pectoral-fin rays 18–21.

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Diagnostic Description

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Metamorphosed females of Melanocetus niger differ from those of all other described species of the genus in having the following combination of characters: anterior margin of vomer nearly straight; least outside width between frontals 14.3–24.3% SL; number of teeth in upper jaw 51–87, in lower jaw 37–57; longest tooth in lower jaw 6.9–10.5% SL; width of pectoral-fin lobe 9.1–13.5% SL; width of escal-bulb 3.8–5.0% SL; length of illicium 29.8–38.8% SL; esca without crests; integument relatively thick.

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Distribution

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All known specimens of M. niger were collected in the Gulf of Panama and adjacent waters of the Eastern Tropical Pacific Ocean, as far west as approximately 90°W. Eighty-three percent of the material was captured by open nets fished at maximum depths of 1500 m and below.

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Habitat

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Meso- to bathypelagic.

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Main Reference

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Pietsch TW. 2009. Oceanic Anglerfishes: Extraordinary Diversity in the Deep Sea. Berkley: University of California Press. 638 p.

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Morphology

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The body of metamorphosed females is short and deep, globular, the depth 60–75% SL (but often appearing highly compressed due apparently to deformation following capture). The head is short, the mouth large, its opening oblique to nearly vertical and the cleft not extending past the eye. The jaws are equal anteriorly. The oral valves are only weakly developed. There are two nostrils on each side of the snout, situated on the distal surface of a rounded papilla. The eye is small and subcutaneous, appearing through a circular translucent area of the integument, within a shallow orbital pit formed between the sphenotic and frontal bones. The teeth are slender, recurved, and depressible, some slightly hooked distally, those in the lower jaw less numerous (except in some small specimens, less than approximately 20 mm) but slightly longer than those in the upper jaw. There are 29–178 teeth in upper jaw and 32–142 in lower jaw. The longest tooth in the lower jaw measures 6.9–25.0% SL. There are 0–12 vomerine teeth. The first epibranchial and the proximal one-half of the first ceratobranchial are bound to the wall of the pharynx by connective tissue. All four epibranchials are closely bound together. The fourth epibranchial and ceratobranchial are bound to the wall of the pharynx, leaving no opening behind the fourth arch. The proximal one-half of the first ceratobranchial is bound to the wall of the pharynx, while the distal half is free, not bound by connective tissue to the adjacent second ceratobranchial. The proximal one-quarter to one-half of ceratobranchials II–IV are not bound together by connective tissue. Gill filaments are absent on the epibranchials, but present on the proximal tip of ceratobranchial I and the full length of ceratobranchials II–IV. A pseudobranch is absent. The length of illicium is 23.1–60.8% SL. The anterior-most tip of the pterygiophore of the illicium is exposed, emerging on the snout between the eyes, the posterior end concealed under the skin. The escal bulb is simple, usually with a rounded or conical distal prolongation, and often with posterior and anterior crests. Elongate cylindrical escal appendages and filaments are absent. The neuromasts of the acoustico-lateralis system are located at the tips of low cutaneous papillae, the pattern of placement as described for other ceratioids.

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Reproduction

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Until very recently, the only evidence of sexual parasitism in this family was an anomalous case of a 20-mm male Melanocetus johnsonii attached to the upper lip of a 168-mm female Centrophryne spinulosa (LACM 30843-1). However, the attachment did not involve fusion of male-female tissue and is therefore not considered to be a parasitic association. Two similar couplings in Melanocetus, but between sexes of the same taxon, have recently been discovered. One of these, a 23.5-mm male attached to a 75-mm female Melanocetus johnsonii (BMNH 2004.6.3.2-3), was collected in the eastern North Atlantic off Ireland in 1999 by the RRS Discovery in a cruise partially funded by the British Broadcasting Corporation for the celebrated “Blue Planet” video series. The second example is part of collections made by Hiromitsu Endo, aboard the R/V Tansei-Maru, west of Okinawa, in April 2002: a 15-mm male attached to a 73-mm female Melanocetus murrayi (BSKU 57842). Both males are only loosely attached, with tissue of the female pinched by the tightly closed denticular jaws of the male, the BMNH example hanging from the middle of the belly of the female, the BSKU specimen attached to the right side of the head of the female, just beneath the sphenotic bone. In both cases, it does not appear that any fusion of male and female tissue has taken place. Either the connections of the two were so recent that the tissues did not have time to fuse, or, more likely, these are the first and only known examples of a non-parasitic coupling—male ceratioids caught in the act of temporary attachment.

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Size

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Known from ten metamorphosed females (12.5–80 mm).

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Type locality

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DANA station 1208(4), Gulf of Panama, 6°48'N, 80°33'W, 3500 m wire, 0810 h, 16 January 1922.

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Type specimen(s)

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Lectotype of Melanocetus niger: ZMUC P9252, 80 mm.

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Morphology

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Dorsal soft rays (total): 14 - 15; Analsoft rays: 4
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Recorder
Roxanne Rei Valdestamon
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Diagnostic Description

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Distinguishing characteristics of metamorphosed female: nearly straight anterior margin of vomer; least outside width between frontals 14.3-24.3% SL; upper jaw with 51-87 teeth, lower jaw with 37-57 teeth; vomerine teeth 0-4; length of longest tooth in lower jaw 6.9-10.5% SL; width of pectoral fin lobe 9.1-13.5% SL; width of escal bulb 3.8-5.0% SL; illicium length 29.8-38.8% SL; esca without crest; relatively thick integument (Ref. 86949)
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Biology

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Specimens captured by open nets fished at maximum depths of 1200-2000m (Ref. 86949).
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Cristina V. Garilao
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Distribution ( Spanish; Castilian )

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Chile Central
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Universidad de Santiago de Chile
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Pablo Gutierrez
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Melanocetus niger

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Melanocetus niger is a species of black seadevil, a type of anglerfish. They have big mouths, with plenty of long teeth, and numerous fin rays. The fish is bathypelagic and has been found at depths ranging from 1,200 to 2,000 metres (3,900 to 6,600 ft). It is endemic to the eastern Pacific Ocean off the coast of Chile.[1]

References

  1. ^ Froese, Rainer and Pauly, Daniel, eds. (2016). Melanocetus niger in FishBase. June 2016 version.
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Melanocetus niger: Brief Summary

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Melanocetus niger is a species of black seadevil, a type of anglerfish. They have big mouths, with plenty of long teeth, and numerous fin rays. The fish is bathypelagic and has been found at depths ranging from 1,200 to 2,000 metres (3,900 to 6,600 ft). It is endemic to the eastern Pacific Ocean off the coast of Chile.

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Melanocetus niger ( Basque )

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Melanocetus niger Melanocetus generoko animalia da. Arrainen barruko Melanocetidae familian sailkatzen da.

Banaketa

Erreferentziak

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

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(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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Melanocetus niger: Brief Summary ( Basque )

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Melanocetus niger Melanocetus generoko animalia da. Arrainen barruko Melanocetidae familian sailkatzen da.

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Melanocetus niger ( Dutch; Flemish )

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Vissen

Melanocetus niger is een straalvinnige vissensoort uit de familie van de hengelaarvissen (Melanocetidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1925 door Regan.

Bronnen, noten en/of referenties
  1. (en) Melanocetus niger. FishBase. Ed. Ranier Froese and Daniel Pauly. 10 2011 version. N.p.: FishBase, 2011.
Geplaatst op:
22-10-2011
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黑角鮟鱇 ( Chinese )

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黑角鮟鱇学名Melanocetus rossi),又稱黑犀魚,為輻鰭魚綱鮟鱇目棘茄魚亞目黑角鮟鱇科的其中一,為深海魚類,分布於東太平洋智利海域,棲息深度1200-2000公尺,體長可達11公分,生活習性不明,無任何經濟價值。

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黑角鮟鱇: Brief Summary ( Chinese )

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黑角鮟鱇(学名:Melanocetus rossi),又稱黑犀魚,為輻鰭魚綱鮟鱇目棘茄魚亞目黑角鮟鱇科的其中一,為深海魚類,分布於東太平洋智利海域,棲息深度1200-2000公尺,體長可達11公分,生活習性不明,無任何經濟價值。

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