scholarly journals A new species of Pimelodus La Cépède, 1803 (Siluriformes: Pimelodidae) from rio Ribeira de Iguape basin, Brazil

2011 ◽  
Vol 9 (1) ◽  
pp. 127-134 ◽  
Author(s):  
Frank Raynner V Ribeiro ◽  
Carlos Alberto S. de Lucena ◽  
Osvaldo T Oyakawa
Keyword(s):  
New Species ◽  
Dorsal Surface ◽  
Branchial Arch ◽  
The Other ◽  
Gill Rakers ◽  
Caudal Fin ◽  
Fin Rays ◽  
A New Species ◽  
Pelvic Fin

Pimelodus multicratifer, a new species, is described from the rio Ribeira de Iguape basin. The new species differs from the other Pimelodus species by the following features: 26 to 30 gill rakers on the first branchial arch; a combination of three to six rows of dark spots regularly or irregularly scattered on the flanks and several small dark spots irregularly scattered on the dorsal surface of head, supraoccipital process, and sometimes on the dorsal and caudal fins; striated lips; maxillary barbels reaching between posterior tip of the pelvic-fin rays and posterior tip of the middle caudal-fin rays.

scholarly journals Knodus shinahota (Characiformes: Characidae) a new species from the río Shinahota, río Chapare basin (Mamoré system), Bolivia

2007 ◽  
Vol 5 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Katiane M. Ferreira ◽  
Fernando M. Carvajal
Keyword(s):  
New Species ◽  
Lateral Line ◽  
The Other ◽  
Caudal Fin ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species ◽  
Pelvic Fin

Knodus shinahota, new species, is described from río Shinahota, a tributary of the upper rio Mamoré basin, Província de Tiraque, Cochabamba State, Bolivia. The new species can be distinguished from all congeners except K. chapadae and K. geryi by having six rows of scales between the lateral line and the dorsal-fin origin (vs 4 or 5 rows of scales in the other species). Knodus shinahota differs from K. chapadae by possessing more rows of scales between the lateral line and the pelvic-fin origin (5 vs 3½ or 4, respectively) and more lateral line scales (38-41 vs 36-38, respectively). It differs from K. geryi by possessing more rows of scales between the lateral-line and the pelvic-fin origin (5 vs 4, respectively); fewer branched anal-fin rays (17-20 vs 15-17, respectively), and by lacking the two symmetric, large, dark, blotches on the basal portions of the caudal-fin lobes that characterize K. geryi.

Hemiodus jatuarana, a new species of Hemiodontidae from the rio Trombetas, Amazon Basin, Brazil (Teleostei, Characiformes)

Zootaxa ◽  
2004 ◽  
Vol 546 (1) ◽  
pp. 1 ◽  
Author(s):  
FRANCISCO LANGEANI
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Branchial Arch ◽  
The Body ◽  
Dark Spot ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Dark Pigmentation ◽  
A New Species

Hemiodus jatuarana, a new species of the Hemiodontidae from Oriximin , rio Trombetas, Amazon Basin, Brazil, is described. The new species can be readily distinguished from its congeners by the presence of a horizontally elongated dark spot on the caudal peduncle, and by the absence of any other dark pigmentation pattern on the body. Hemiodus jatuarana is readily separated from H. immaculatus, another species without dark pigmentation on the body, by having 25 27 epibranchial and 36 37 ceratobranchial gill rakers on the first branchial arch, and caudal-fin lobes without longitudinal stripes, vs. 14 16 and 21 25 gill rakers, and a conspicuous longitudinal stripe on each caudal-fin lobe in H. immaculatus. The new species is only known from its type-locality, where it cooccurs with H. immaculatus.

Parakysis hystriculus, a new species of catfish (Siluriformes: Akysidae) from Sumatra

Zootaxa ◽  
2009 ◽  
Vol 1977 (1) ◽  
pp. 39-48
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Dorsal View ◽  
Caudal Fin ◽  
Lower Lip ◽  
Posterior Branch ◽  
Anterior Branch ◽  
Fin Rays ◽  
Left And Right ◽  
A New Species ◽  
Pelvic Fin

Parakysis hystriculus, new species, is described from the Lalang River drainage in southern Sumatra. It can be distinguished from congeners in having a combination of branched pelvic-fin rays with anterior branch always shorter than posterior branch, lateral edges of head evenly sloping in dorsal view, anteriormost pair of accessory inner mandibular barbels longer than distance separating bases of left and right barbel, outer mandibular barbel with one accessory barbel, mandibular laterosensory pore between bases of inner and outer mandibular barbels present, margin of lower lip with medial concavity, anal fin rounded, caudal fin with narrow lobes having evenly-tapering posteromedial margins and 10 branched rays without secondary branches.

A new species of Astyanax (Characiformes: Characidae) from the endorheic RRo SalR basin, Tucumán, northwestern Argentina

Zootaxa ◽  
2007 ◽  
Vol 1646 (1) ◽  
pp. 31-39 ◽  
Author(s):  
JUAN MARCOS MIRANDE ◽  
GAST[N AGUILERA ◽  
MARQA DE LAS MERCEDES AZPELICUETA
Keyword(s):  
New Species ◽  
Short Distance ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Northwestern Argentina ◽  
Tooth Position ◽  
Maxillary Tooth ◽  
Fin Rays ◽  
A New Species ◽  
Pelvic Fin

Astyanax puka, new species from the endorheic RRo SalR basin, is diagnosed by the following combination of characters: shallow body (33.5–39.8 % SL), 36–38 perforated scales in lateral line, 6/5 transverse scales, 9–10 gradually decreasing dentary teeth, distally expanded premaxillary teeth, one distally expanded maxillary tooth with 7–9 cusps, short upperjaw length (34.5–37.8 % HL), short maxilla (20.7–23.3 % HL) expanded abruptly under maxillary tooth position, short postorbital distance (36.6–46.9 % HL), short distance between pelvic and anal-fin origins (17.1–20.6 % SL), 22–27 branched anal-fin rays, long caudal peduncle (13.3–16.5 % SL), bony hooks restricted to pelvic-fin rays 2 to 6 and anterior 6–13 branched anal-fin rays on mature males, and the presence of broad denticles on anterior, lateral, and posterior edges of first ceratobranchial gill rakers.

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.

Silurichthys ligneolus, a new catfish (Teleostei: Siluridae) from southern Borneo, Indonesia

Zootaxa ◽  
2011 ◽  
Vol 2793 (1) ◽  
pp. 56
Author(s):  
HEOK HEE NG ◽  
HEOK HUI TAN
Keyword(s):  
New Species ◽  
Lower Lobe ◽  
Branchial Arch ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Caudal Fin ◽  
Fin Rays ◽  
Eye Diameter ◽  
Gill Raker ◽  
A New Species

Silurichthys ligneolus, a new species of silurid catfish, is described from blackwater habitats in southern Borneo. The new species can be distinguished from congeners in having a combination of: body depth at anus 9.1–11.0% SL, caudal peduncle depth 4.7–5.5% SL, eye diameter 6.7–9.8% HL, pelvic fins present, 44–45 anal-fin rays, 3–4 principal rays on the lower caudal-fin lobe, lower lobe of caudal fin indistinct, 46–48 vertebrae, one gill raker on the first branchial arch, and body uniformly brown. Based on the morphology of its caudal fin, S. ligneolus is hypothesized to be the sister taxon of S. sanguineus.

Chromis tingting, a new species of damselfish from mesophotic coral ecosystems of southern Japan, with notes on C. mirationis Tanaka (Teleostei: Pomacentridae)

Zootaxa ◽  
2019 ◽  
Vol 4586 (2) ◽  
pp. 249 ◽  
Author(s):  
YI-KAI TEA ◽  
ANTHONY C. GILL ◽  
HIROSHI SENOU
Keyword(s):  
New Species ◽  
Lateral Line ◽  
The Other ◽  
Sagami Bay ◽  
Gill Rakers ◽  
Mesophotic Coral Ecosystems ◽  
Caudal Fin ◽  
Southern Japan ◽  
A New Species

Chromis tingting sp. nov., is described on the basis of the holotype and three paratypes from Sagami Bay, Japan. The new species likely belongs to a complex consisting of C. mirationis, C. okamurai and C. struhsakeri, with which it shares the following character combination: dorsal rays XIV,13–14; anal rays II,12; pectoral rays 19–20; tubed lateral-line scales 15–17; two spinous procurrent rays dorsally and ventrally in the caudal fin; and a generally silvery white adult coloration. The new species differs from the other members of its complex in coloration details (particularly in juvenile coloration), and in having fewer gill rakers (5–6 + 17–20 = 22–26), and a larger eye -(13.7–19.4 % SL). The new species has previously been confused with Chromis mirationis, and the contention is herewith briefly discussed. 

A new Malthopsis batfish from Taiwan, with comments on Malthopsis tiarella Jordan, 1902 (Lophiiformes: Ogcocephalidae)

Zootaxa ◽  
2019 ◽  
Vol 4702 (1) ◽  
pp. 73-86
Author(s):  
HSUAN-CHING HO ◽  
KEITA KOEDA
Keyword(s):  
New Species ◽  
Dorsal Surface ◽  
Ventral Surface ◽  
Species Group ◽  
Pectoral Fin ◽  
Caudal Fin ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays

A new species of the triangular batfish genus Malthopsis Alcock, 1891 is described on the basis of 9 specimens collected from off Taiwan. The new species belongs to a species group with ventral surface covered by numerous small prickle-like bucklers. It differs from the members in this species group in having ventral surface entirely covered with tiny bucklers; principal bucklers on dorsal surface relatively tall, few in number and loose in arrangement; subopercle dull without enlarged forward-directed spine; rostral spine directed forward horizontally; 5 dorsal-fin rays and 12 pectoral-fin rays; and posterior tip of appressed anal fin not reaching caudal-fin base. Two specimens of Malthopsis tiarella Jordan, 1902 collected from Taiwan are recognized and its diagnosis is discussed. 

New species of Trichomycterus (Siluriformes: Trichomycteridae) lacking pelvic fins from Paranapanema basin, southeastern Brazil

Zootaxa ◽  
2017 ◽  
Vol 4319 (3) ◽  
pp. 550 ◽  
Author(s):  
LUZ E. OCHOA ◽  
GABRIEL S. C. SILVA ◽  
GUILHERME J. COSTA E SILVA ◽  
CLAUDIO OLIVEIRA ◽  
ALESSIO DATOVO
Keyword(s):  
New Species ◽  
Genetic Analysis ◽  
Dna Barcode ◽  
The Other ◽  
Southeastern Brazil ◽  
Molecular Analyses ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

A new species of trichomycterid catfish, Trichomycterus pascuali, is described from Paranapanema basin and is distinguished from all congeners by the possession of five pectoral-fin rays and the absence of pelvic fin, girdle, and muscles. Additional features further differentiate the new species from the other congeners lacking pelvic fins, T. candidus, T. catamarcensis, and T. tropeiro. The identification of T. pascuali is additionally corroborated by genetic divergence based on DNA-barcode analysis. Osteological and myological data unequivocally support the inclusion of the new species in the Trichomycterinae and molecular analyses justify its allocation to the genus Trichomycterus rather than Eremophilus, a trichomycterine taxon traditionally diagnosed by the lack of pelvic fins. Our genetic analysis further indicates that pelvic fins were independently lost in E. mutisii, T. candidus, and T. pascuali. 

Glyptothorax jayarami, a new species of catfish (Teleostei: Sisoridae) from Mizoram, northeastern India

Zootaxa ◽  
2012 ◽  
Vol 3304 (1) ◽  
pp. 54 ◽  
Author(s):  
YUMNAM RAMESHORI ◽  
WAIKHOM VISHWANATH
Keyword(s):  
New Species ◽  
Branchial Arch ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Northeastern India ◽  
Central Depression ◽  
A New Species

A new sisorid catfish, Glyptothorax jayarami, is described from the Kaladan basin of Mizoram, India. It is characteristicin having densely tuberculate skin; an elongate, ovoid thoracic adhesive apparatus with an oval central depression fromwhich the ridges on the apparatus diverge; two blackish-brown blotches at caudal-fin base behind the hypural plate; welldeveloped plicae on the ventral surfaces of simple and adjacent branched rays of pectoral and pelvic fins; a narrow caudal peduncle (5.5–7.9 % SL) and long 2 + 6–7 gill rakers on the first branchial arch.

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