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1.
Zootaxa ; 5415(2): 333-338, 2024 Feb 21.
Artículo en Inglés | MEDLINE | ID: mdl-38480200

RESUMEN

The elongate barracudina, Paralepis elongata (Brauer, 1906), received limited attention in the past, with only a few individuals documented, mostly in publications focusing on the feeding habits of large predatory pelagic fishes. Furthermore, the taxonomic history of the species is complicated, with some earlier sources providing incorrect information that influenced subsequent works. As a result, the accurate distribution range of P. elongata remains uncertain. An adult male specimen of P. elongata, representing the largest known individual, is reported from off Angola, southeastern Atlantic. A detailed description is provided, and the literature records of the species are reviewed and discussed.


Asunto(s)
Peces , Conducta Predatoria , Humanos , Masculino , Animales , Angola , Océano Atlántico
2.
Zootaxa ; 5301(1): 137-150, 2023 Jun 08.
Artículo en Inglés | MEDLINE | ID: mdl-37518568

RESUMEN

A new species, Coelorinchus zinjianus sp. nov., is described from the western Indian Ocean off Madagascar. In many respects, the new species is similar to C. quadricristatus but differs from that species in details of scale spinulation, mouth coloration (pale vs. dark), size of external light organ, and some other proportions. Together with C. flabellispinis and C. trunovi, these species form the flabellispinis species group, which is restricted to the northern and western Indian Ocean and is similar in most respects to the West-Pacific tokiensis group, but differs in the size and shape of the terminal snout scute (long and pointed, diamond-shaped vs. small and blunt) and apparently attaining a smaller adult size (< 45-55 cm TL vs. > 80-90 cm TL, depending on the species).

3.
Zootaxa ; 5092(2): 176-190, 2022 Jan 19.
Artículo en Inglés | MEDLINE | ID: mdl-35391213

RESUMEN

The Indian jellynose fish Ateleopus indicus Alcock 1891 is redescribed as a member of the genus Parateleopus based on examination of the holotype and 11 other specimens. The character states of small mouth, no sharp spine on sphenotic, and relatively short pelvic fin suggest that it belongs in the genus Parateleopus Smith Radcliffe 1912. Comments on its generic status and comparisons with all genera of the family Ateleopodidae are provided. The species is distinguished from Parateleopus microstomus, the sole congener, by 810 dorsal-fin rays as compared with three rays in P. microstomus.


Asunto(s)
Lenguado , Perciformes , Animales , Peces
4.
Zootaxa ; 5213(2): 130-148, 2022 Nov 24.
Artículo en Inglés | MEDLINE | ID: mdl-37044947

RESUMEN

Re-investigation of the grenadier Coelorinchus vityazae endemic to the West Wind Drift Islands Province reveals species-level differences between the populations from the southeastern Atlantic and southwestern Indian oceans. The southeastern Atlantic populations (from Discovery and Gough seamounts) are described as a new species, C. inventionis sp. nov., characterized by a moderately short snout (27.7-33.9 % HL, vs. 32.0-38.7 % in C. vityazae) tipped with short, weakly tripartite terminal scute (vs. triangular and sharply pointed); uniformly thick, unpigmented lips (vs. fleshy, partly blackish upper lip with lateral portions expanded at middle in C. vityazae); modally i+17 or i+18 pectoral-fin rays (vs. i+15 or i+16), and anal-fin rays conspicuously darkened distally (vs. uniformly and finely peppered). Statistically significant differences between these two species were found for 28 of 39 morphometric characters. The Discovery and Gough specimens show a drastic difference in size of the light organ, which may reflect an initial stage of speciation within C. inventionis sp. nov. Iwamoto & Graham's (2008) key to the species of the C. fasciatus group is modified for inclusion of the new species.


Asunto(s)
Gadiformes , Perciformes , Piper nigrum , Animales , Peces , Océano Atlántico
5.
Zootaxa ; 5194(2): 193-212, 2022 Oct 05.
Artículo en Inglés | MEDLINE | ID: mdl-37045336

RESUMEN

A new species, Coelorinchus tricristiger sp. nov., is described from the western Indian Ocean off Socotra and Somalia. It belongs to the Coelorinchus hubbsi group of the subgenus Quincuncia. The modified scales on top of the postorbital portion of head forming a prolonged longitudinal ridge, in combination with its distinctive body markings and the absence of a ventral projection of subopercle, make the new species easily distinguishable from congeners. This is the second representative of the C. hubbsi group in the western Indian Ocean in addition to the previously known C. melanosagmatus.


Asunto(s)
Gadiformes , Animales , Océano Índico
6.
Zootaxa ; 4429(2): 357-371, 2018 Jun 06.
Artículo en Inglés | MEDLINE | ID: mdl-30313274

RESUMEN

Two new gobiid species, Thorogobius alvheimi sp. nov. and Thorogobius laureatus sp. nov. (Teleostei: Gobiiformes: Gobiidae), are described from the outer continental shelf and upper slope of the Eastern Central Atlantic off Angola, Ghana and São Tomé and Príncipe. The specimens were trawled from depths between 57 and 208 m. The new species are most similar to Thorogobius angolensis. Thorogobius alvheimi sp. nov. is distinguished from its congeners in the combination of following characters. Fins: first dorsal fin with the second and third spines distinctly elongated; pectoral fin ray count 20-21; pelvic disc complete and short with well-developed anterior membrane (frenum) and pointed lateral lobes. Scales: nape and predorsal area naked; no scales on opercle; scales in longitudinal series 27-31. Pattern of free neuromasts: supratemporal rows tr and trp developed, extending transversally between pores H and K; longitudinal row g short, not passing row m posteriorly and distinctly distant from row h; infraorbital row 6 long, ventrally extending to lower margin of preopercle, its ventral section 6i originating anterior to its dorsal section 6s; posterior lateral row h reaching anteriorly above posterior third of opercle. Coloration: body uniformly pale fawn and brown; margin of scale pockets dark brown pigmented, yielding a reticulated pattern; pale spots on nape and predorsal area; caudal fin uniformly dusky greyish. Thorogobius laureatus sp. nov. is distinguished from its congeners in the combination of following characters. Fins: first dorsal fin the second and third spines distinctly elongated; pectoral fin ray count 19-22; pelvic disc complete, short, with well-developed anterior membrane (frenum) with pointed lateral lobes. Scales: scales on sides of predorsal area and midline mostly naked; no scales on opercle; scales in longitudinal series 24-27. Pattern of free neuromasts (sensory papillae): supratemporal rows tr and trp developed, extending transversally between pores H and K; longitudinal row g long, passing row m posteriorly and relatively close to row h; infraorbital row 6 long, ventrally extending to lower margin of preopercle, its ventral (6i) and dorsal (6s) originating opposite to each other; posterior lateral rows: row h long, reaching anteriorly above middle of opercle. Coloration: body pale fawn and brownish; margin of scale pockets dark brown pigmented, yielding a reticulated pattern; five brown blotches on flanks in lateral midline from below first dorsal fin to caudal peduncle; caudal fin with six or seven distinct dark vertical bands.


Asunto(s)
Perciformes , Angola , Animales , Peces , Ghana , Agua
7.
Zootaxa ; 3856(1): 117-34, 2014 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-25284648

RESUMEN

Two new species of Hymenocephalus are described from the New Zealand region and Tasman Sea. Hymenocephalus fuscus sp. n. has 11-12 pelvic fin rays, is darkly pigmented, with enlarged bony ridges on the dorsal aspects of head, lacks a chin barbel, has few (16-19) gill rakers on inner side of first arch and is similar to other species in the H. aterrimus species group. Hymenocephalus maculicaudus sp. n. has 8 pelvic fin rays, a mid-lateral line of melanophores on body and tail that extends about a head length posterior to anal fin origin, a short (7-16 % HL) chin barbel and is similar to other species in the H. megalops species group. Hymenocephalus nascens has 12-14 pelvic fin rays, lacks a chin barbel, has a mid-lateral stripe of silvery (fresh) or brownish (preserved) pigment running along trunk and tail. Hymenogadus gracilis has a serrated (weak, near tip) first dorsal fin spine, 7-9 pelvic fin rays, long (20-30% HL) chin barbel, and one row of enlarged melanophores along lateral mid-line of the tail. Hymenocephalus nascens and Hymenogadus gracilis are recorded for the first time from the New Zealand region. A key to the known New Zealand species of Hymenocephalus and Hymenogadus is provided. 


Asunto(s)
Gadiformes/clasificación , Distribución Animal , Estructuras Animales/anatomía & histología , Estructuras Animales/crecimiento & desarrollo , Animales , Tamaño Corporal , Ecosistema , Femenino , Gadiformes/anatomía & histología , Gadiformes/crecimiento & desarrollo , Masculino , Nueva Zelanda , Tamaño de los Órganos
8.
Rev. biol. trop ; 49(Supl.1): 21-27, jul. 2001. ilus
Artículo en Inglés | LILACS | ID: lil-502476

RESUMEN

Two unusual specimens of the grenadier genus Coryphaenoides were collected by the deep-submersible vehicle Johnson Sea-Link off the Galápagos. Unlike any other member of the genus, the snout in these specimens was rounded, non-protruding, naked anteriorly and ventrally, with no tubercular scales marking the terminal and lateral angles. They are herein described as Coryphaenoides gypsochilus. Additional specimens of grenadiers were procured by the Johnson Sea-Link, including the second and third specimens of Nezumia ventralis and the first record of Caelorinchus canus from these waters. Three species and one subspecies of Galápagos grenadiers are endemic.


Asunto(s)
Animales , Masculino , Gadiformes/clasificación , Ecuador , Gadiformes/anatomía & histología
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