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New Zealand Giant Sawbelly

Hoplostethus melanopeza Roberts & Gomon 2012

Diagnostic Description

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This species is distinguished by the following characters: 15 pectoral-fin rays, rarely 13, 14 or 16; 18-21 total gill rakers on outer side of first arch; 9-12 abdominal scutes, some scutes in large individuals with multiple apical points; 16-22 predorsal scales; isthmus lacking scales; body scales adherent; lateral–line scales with strong medial ridge, but no spine in small and medium sized adults, with strong spine centrally on posterior margin in large adults; scales on predorsal midline forming low raised ridge; body ovoid and deep, depth 1.9-2.1 in SL; nape gently curved, forehead almost straight to above upper lip; dorsal- and anal-fin spines of moderate thickness; body of adults grey, superimposed with deep red in life, outer margin of all fins with narrow black edge in adults; buccal cavity and opercular recess black, vomer, margins of mouth roof lateral to palatines, underside of tongue and upper surface of lower jaw stark white (Ref. 92805).
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Estelita Emily Capuli
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Morphology

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Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 12 - 13; Analspines: 3; Analsoft rays: 3 - 10
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Biology

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Inhabits continental slopes, seamounts and submarine rises with collection depths recorded between about 140 and 760 m, but most often 250-400 m (Ref. 92805).
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New Zealand giant sawbelly

provided by wikipedia EN

The New Zealand giant sawbelly (Hoplostethus melanopeza) is a slimehead of the order Beryciformes. It is native to the South Pacific, more specifically the sub-tropical and temperate latitudes of the Tasman and South Fiji basins. It is also found along Australia's southeastern coast, the Bay of Plenty, and southern Kermadec Ridge at the north end of New Zealand's North Island. It can reach sizes of up to 51.5 cm (20.3 in) SL. Its natural habitats are "continental slopes, seamounts, and submarine rises" between 250–400 m (820–1,310 ft), though it has been found as shallow as 140 metres (460 ft) and as deep as 760 m (2,490 ft).[1] The first H. melanopeza caught were thought to be individuals of the H. gigas species, and it was not distinguished as a separate species until much later. One key difference between the two is that although both are red, H. melanopeza has black fin margins.[2]

References

  1. ^ Froese, Rainer; Pauly, Daniel (eds.) (2016). "Hoplostethus melanopeza" in FishBase. December 2016 version.
  2. ^ Roberts, C. D.; M. F. Gomon (2012). "A review of giant roughies of the genus Hoplostethus (Beryciformes, Trachichthyidae), with descriptions of two new Australasian species" (PDF). Memoirs of Museum Victoria. 69 (69): 341–354. doi:10.24199/j.mmv.2012.69.08. Archived from the original (PDF) on December 25, 2013.

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New Zealand giant sawbelly: Brief Summary

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The New Zealand giant sawbelly (Hoplostethus melanopeza) is a slimehead of the order Beryciformes. It is native to the South Pacific, more specifically the sub-tropical and temperate latitudes of the Tasman and South Fiji basins. It is also found along Australia's southeastern coast, the Bay of Plenty, and southern Kermadec Ridge at the north end of New Zealand's North Island. It can reach sizes of up to 51.5 cm (20.3 in) SL. Its natural habitats are "continental slopes, seamounts, and submarine rises" between 250–400 m (820–1,310 ft), though it has been found as shallow as 140 metres (460 ft) and as deep as 760 m (2,490 ft). The first H. melanopeza caught were thought to be individuals of the H. gigas species, and it was not distinguished as a separate species until much later. One key difference between the two is that although both are red, H. melanopeza has black fin margins.

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