Description of a new codling species of Physiculus from Taiwan (Gadiformes: Moridae)

Zootaxa ◽  
2021 ◽  
Vol 5052 (1) ◽  
pp. 105-116
Author(s):  
CHI-NGAI TANG
Keyword(s):  
New Species ◽  
Dna Barcoding ◽  
Upper Limb ◽  
Posterior Margin ◽  
Gill Arch ◽  
Head Length ◽  
Light Organ ◽  
Gill Rakers ◽  
A New Species

A new species of codling Physiculus megastomus sp. nov. is described based on the holotype and a subadult paratype collected from northern and eastern Taiwan. The new species is classified in Physiculus by the presence of a ventral light organ on the abdomen and a chin barbel, and the absence of vomerine teeth. It is distinguished from congeners in having a large mouth with the posterior end of the maxilla extending well behind the level of the posterior margin of the orbit, its length 57.8‒60.7% in head length (HL) and the combination of the following characters: both jaws bearing caniniform teeth; snout, suborbital area, and gular region fully scaled; ventral light organ small, its length 5.5‒6.7% of distance from the interventral line to the origin of the anal fin (InV-af), located approximately at the mid-point of InV-af; five gill rakers on the upper limb of the first gill arch. DNA barcoding supported the establishment of the new species.  

scholarly journals A new species of Anchoviella Fowler, 1911 (Clupeiformes: Engraulidae) from the Amazon basin, Brazil

2012 ◽  
Vol 10 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Marina V. Loeb
Keyword(s):  
New Species ◽  
Standard Length ◽  
Posterior Margin ◽  
Amazon Basin ◽  
Head Length ◽  
Estuarine Species ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Upper Jaw ◽  
A New Species

Anchoviella juruasanga is described from the drainages of rios Negro, Madeira, Tapajós, Trombetas, Tocantins, and Jari, in the Amazon basin, Brazil. The new species is distinguished from its congeners by having a short upper jaw, with its posterior tip extending between the verticals through anterior and posterior margins of the pupil (vs. posterior tip of upper jaw extending beyond the vertical through posterior margin of the pupil). Anchoviella juruasanga is also distinct from other strictly freshwater Amazonian species of the genus by the distance from tip of snout to posterior end of upper jaw between 8 and 11% in standard length (vs. 14% or more in A. alleni, A. carrikeri, A. guianensis, and A. jamesi). The anal-fin origin slightly posterior to or at the vertical through the base of the last dorsal-fin ray further distinguishes the new species from A. alleni (anal-fin origin posterior to the vertical through the last anal-fin ray by at least 14% of head length) and A. jamesi (anal-fin origin anterior to the vertical through the last anal-fin ray). An identification key for the Amazonian species of Anchoviella, including marine and estuarine species known to occur in the lower portion of the basin, is presented.

Stolephorus grandis, a new anchovy (Teleostei: Clupeiformes: Engraulidae) from New Guinea and Australia

Zootaxa ◽  
2021 ◽  
Vol 5004 (3) ◽  
pp. 481-489
Author(s):  
HARUTAKA HATA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
New Guinea ◽  
Gill Arch ◽  
The Other ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Pelvic Fin

The new anchovy Stolephorus grandis n. sp., described on the basis of 10 specimens collected from Papua, Indonesia, and Australia, closely resembles Stolephorus mercurius Hata, Lavoué & Motomura, 2021, Stolephorus multibranchus Wongratana, 1987, and Stolephorus rex Jordan & Seale, 1926, all having double pigmented lines on the dorsum from the occiput to the dorsal-fin origin, a long maxilla (posterior tip just reaching or slightly beyond the posterior margin of preopercle), and lacking a predorsal scute. However, the new species clearly differs from the others in having fewer gill rakers (35–39 total gill rakers on the first gill arch in S. grandis vs. > 38 in the other species), a greater number of vertebrae (total vertebrae 42–43 vs. fewer than 41), longer caudal peduncle (21.9–23.7% SL vs. < 20.8%), and the depressed pelvic fin not reaching posteriorly to vertical through the dorsal fin-origin (vs. reaching beyond level of dorsal-fin origin).

Polydactylus luparensis, a new species of threadfin (Perciformes: Polynemidae) from the Batang Lupar River, Sarawak, Borneo, Malaysia

Zootaxa ◽  
2010 ◽  
Vol 2405 (1) ◽  
pp. 63
Author(s):  
PEK KHIOK ANNIE LIM ◽  
HIROYUKI MOTOMURA ◽  
ALBERT CHUAN GAMBANG
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Lower Limb ◽  
Posterior Margin ◽  
Gill Rakers ◽  
Caudal Fin ◽  
Dorsal Fin ◽  
Basal Half ◽  
A New Species ◽  
Pelvic Fin

A new species of large-sized brackishwater threadfin, Polydactylus luparensis, is described from the Batang Lupar River in Sarawak, Malaysia, Borneo on the basis of 5 specimens (610–715 mm standard length). The new species can be distinguished from all other Polydactylus by having 8 dorsal-fin spines, first spine tiny, second spine very strong (its width more than 5 times the width of remaining spines); 13 second dorsal-fin soft rays; 11 anal-fin soft rays; 12 pectoralfin rays, its length 22–24% (mean 23%) of SL, posterior tip not reaching a vertical through posterior tip of depressed pelvic fin; 6 pectoral filaments, fourth or fifth filament longest, its length 77–85% (mean 81%) of SL, posterior tip extending slightly beyond caudal-fin base; pored lateral-lined scales 67–75 (mean 71); lateral line unbranched, extending onto upper end of lower caudal-fin lobe; 6 scale rows above lateral line, 8 below; 14 gill rakers on upper limb, 18 on lower limb, 32 in total; occipital profile concave; posterior margin of maxilla extending considerably beyond a vertical through posterior margin of adipose eyelid; depth of posterior margin of maxilla 4–5% (mean 5%) of SL, greater than orbit diameter; well-developed swimbladder present; basal half of third to sixth pectoral filament white, becoming black distally. Polydactylus luparensis is currently known only from the mouth of the Batang Lupar River.

scholarly journals Description of Cathorops mapale, a new species of sea catfish (Siluriformes: Ariidae) from the Colombian Caribbean, based on morphological and mitochondrial evidence

Zootaxa ◽  
2005 ◽  
Vol 1045 (1) ◽  
pp. 45 ◽  
Author(s):  
RICARDO BETANCUR-R. ◽  
Arturo A. ACERO P.
Keyword(s):  
New Species ◽  
Standard Length ◽  
Sequence Divergence ◽  
Species Group ◽  
Gill Arch ◽  
Gill Rakers ◽  
Western Atlantic ◽  
Gill Raker ◽  
The Guianas ◽  
A New Species

A new species of sea catfish (Ariidae), Cathorops mapale, is described from the central and southwestern Colombian Caribbean coast. The species is distinguished from other Cathorops species from the western Atlantic by the following combination of features: 20–24 anterior gill rakers on first gill arch, 18–21 anterior gill rakers on second gill arch; maxillary barbels 27.8–39.3% standard length; medial head groove long and deep, extending posteriorly almost to supraoccipital keel. This species has been widely misidentified as C. spixii (Agassiz), a species known from Brazil to the Guianas. Based on mitochondrial evidence (cytochrome b and ATP synthase 8/6), C. mapale is more closely related to the eastern Pacific C. fuerthii (Steindachner) species group (2.2–2.8% sequence divergence) than to the C. spixii clade (5.9–6.2% sequence divergence). C. mapale is distinguished from the C. fuerthii group by having higher anterior gill raker counts on the first (14–15 in the C. fuerthii group) and second (15–17 in the C. fuerthii group) gill arches, and by having a smaller mouth (8.3–10.6% standard length in C. mapale and 11.0–11.6% standard length in the C. fuerthii group).

scholarly journals A new species of Propimelodus Lundberg & Parisi, 2002 (Siluriformes: Pimelodidae) from rio Araguaia, Mato Grosso, Brazil

2007 ◽  
Vol 5 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Marcelo S. Rocha ◽  
Renildo R. de Oliveira ◽  
Lúcia H. Rapp Py-Daniel
Keyword(s):  
New Species ◽  
Head Length ◽  
Black Dot ◽  
Gill Rakers ◽  
Mato Grosso ◽  
Lateral Process ◽  
Snout Length ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species

A new species of Propimelodus from the middle course of the rio Araguaia is described. Propimelodus araguayae, new species, can be distinguished from its congeners in having a conspicuous black dot on the base of the dorsal-fin rays (vs. a different pattern), large eyes (29.7-34.8% of head length and 62.7-74.7% of snout length vs. 14.5-21.1% and 31-44% in P. caesius and 9.5-19.7% and 17-38% in P. eigenmanni), anal-fin lobe present (vs. absent), premaxillary bone with three irregular rows of teeth (vs. 4-5 in P. caesius and 5-8 in P. eigenmanni), tip of anterior lateral process of basipterygium at the same level as the tip of the anterior medial process (vs. anterior lateral process extending beyond the tip of the anterior medial process), total number of vertebrae (43-44 vs. 47-48 in P. caesius and 45-46 in P. eigenmanni) and total number of gill rakers (28-33 vs. 20-23 in P. caesius and 19-20 in P. eigenmanni). This new species is possibly endemic to the middle course of the rio Araguaia.

scholarly journals New species of Metynnis Cope, 1878 (Characiformes: Characidae) from the rio Paraguay basin, Mato Grosso State, Brazil

2009 ◽  
Vol 7 (2) ◽  
pp. 141-146 ◽  
Author(s):  
Carla S. Pavanelli ◽  
Rafaela P. Ota ◽  
Paulo Petry
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Color Pattern ◽  
Head Length ◽  
Gill Rakers ◽  
Mato Grosso ◽  
A New Species

A new species of Metynnis is described from the rio Cuiabá and rio Manso drainages, in the upper rio Paraguay basin, Mato Grosso State, Brazil. This laterally compressed species, which rarely exceeds 140 mm in SL, is readily distinguished from other members of the genus Metynnis by having 100-110 lateral-line scales, 48-56 rows of scales above the lateral line, 32-36 circumpeduncular scales, 22-24 gill rakers, 38 vertebrae, singular color pattern, and relatively smaller snout, width, and head length.

A new species of anchovy, Encrasicholina sigma (Teleostei, Clupeiformes, Engraulidae), from Sulawesi, Indonesia

Zootaxa ◽  
2020 ◽  
Vol 4750 (2) ◽  
pp. 261-268
Author(s):  
HARUTAKA HATA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Gill Arch ◽  
The Third ◽  
Upper Jaw ◽  
Gill Raker ◽  
A New Species

The new anchovy Encrasicholina sigma n. sp. is described on the basis of 20 specimens collected from Sulawesi, Indonesia. Although the new species can be distinguished from all other congeners except for Encrasicholina pseudoheteroloba (Hardenberg 1933) by having a long upper jaw reaching to posterior margin of preopercle, dorsal and anal fins with two unbranched rays, an exposed bony urohyal, and spine-like scutes on the abdomen, E. sigma is distinguished from E. pseudoheteroloba by lower total gill-raker counts on the first, second, third, and fourth gill arches, and on the posterior face of the third gill arch (37–42, 31–35, 18–23, 16–20, and 4–7, respectively vs. 45–55, 34–45, 22–29, 19–25, and 4–9 in E. pseudoheteroloba) and a longer head (25.2–27.0% of SL vs. 22.8–27.5%) and shorter anal-fin base (12.9–14.8% of SL vs. 13.8–18.7%). 

A new species of the congrogadin genus Rusichthys from southern Oman (Perciformes; Pseudochromidae), with notes on its osteology

1996 ◽  
Vol 74 (3) ◽  
pp. 581-584 ◽  
Author(s):  
Richard Winterbottom
Keyword(s):  
New Species ◽  
Outer Surface ◽  
Gill Arch ◽  
Colour Pattern ◽  
Gill Rakers ◽  
Caudal Skeleton ◽  
Northern Kenya ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species

Three specimens of a distinctive new species of congrogadin belonging to the basal lineage (Rusichthys) of the subfamily are reported here. The new species differs from its congener in having more dorsal-fin and anal-fin rays and more gill rakers on the outer surface of the first gill arch, in colour pattern, and in various osteological details (especially of the caudal skeleton). Rusichthys explicitus n.sp. is presently known from a single collection taken from 27 m off southwest Oman, whereas R. plesiomorphus is presently known from two specimens trawled in 140 m on the Lamu Banks off northern Kenya.

scholarly journals A NEW SPECIES OF FISH OF THEÜENUS Stellifer (PERCIFORMES: SCIAENIDAE) FROM THE SOUTH CARIBBEAN SEA

2016 ◽  
Vol 13 ◽  
Author(s):  
Orangel Aguilera ◽  
Oscar David Solano ◽  
Julio Valdez
Keyword(s):  
New Species ◽  
Anterior Chamber ◽  
Gill Filament ◽  
Caribbean Sea ◽  
Gill Arch ◽  
Similar Species ◽  
Swim Bladder ◽  
Gill Rakers ◽  
Interorbital Width ◽  
A New Species

The genus Stellifer is charaterized by its lack of mental barbels, interorbital width 3.5 or less in head, swim bladder with two chambers, the anterior with a pair of diverticula located posterolateralÿ, cavernous head, gill rakers long and slender; otoliths sagittae and lapillus enlarged. A new species of Stellifer is described. This species is characterized by the presence of a pair of small bulb-like diverticula in the anterior chamber of the swim bladder, dark first gill arch, with 42-49 gill rakers, the longest of them larger in length than the gill filament located at angle of arch, and four mental pores. Differs from other species of the genus by the number of gill rakers. The more similar species is S. rastrifer of which differs in that it has different number of preopercular spines and mental pores.

scholarly journals A new species of leaffish Polycentrus Müller & Troschel, 1849 (Percomorpha: Polycentridae) from the rio Negro, Brazil

2014 ◽  
Vol 12 (4) ◽  
pp. 747-753 ◽  
Author(s):  
Daniel Pires Coutinho ◽  
Wolmar Benjamin Wosiacki
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Lower Edge ◽  
Posterior Edge ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
Rio Negro ◽  
Ventral Edge ◽  
A New Species

A new species of Polycentrusis described from the rio Negro, in Brazil. It is distinguished from P. schomburgkii by the presence of two dark postocular and one subocular band, all smaller than orbital diameter, blunt snout, isognathous mouth, reduction of the serrations on the lower edge of the lacrimal-spines ranging from zero to two tiny spines at the posterior end, intensely serrated edge of the interopercle, fully serrated posterior edge of the vertical arm of the preopercle, presence of five pungent opercular spines, subopercle broadly serrated along most of its posterior ventral edge, presence of serrations dorsally on the posterior margin of the cleithrum, fourth ray of pectoral fin reaching the vertical through the anal-fin origin, 19-21 predorsal scales, 19-20 scales on dorsal-fin base, 12-14 scales on anal-fin base, and absence of a median opercular blotch.

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