scholarly journals A new species of Hyphessobrycon (Teleostei: Characidae) from the upper rio Tocantins drainage, with bony hooks on fins

2005 ◽  
Vol 3 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Vinicius A. Bertaco ◽  
Luiz R. Malabarba
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Pectoral Fins ◽  
Fin Rays ◽  
A New Species

A new species of characid, Hyphessobrycon hamatus, is described from the upper rio Tocantins, Goiás, Brazil. The new species is distinguished from all other Hyphessobrycon species by the presence of bony hooks on dorsal, anal, pelvic, and pectoral fins of males, the two black humeral spots, the 4 or 5 teeth in the inner series of the premaxilla, a maxilla with 2-3 teeth, the iii-v, 16-18 anal-fin rays, and a lateral line with 10-32 perforated scales and 33-35 scales in a longitudinal series.

scholarly journals Hyphessobrycon natagaima (Characiformes: Characidae) a new species from Colombia, with a key to the Magdalena Basin Hyphessobrycon species

Caldasia ◽  
2015 ◽  
Vol 37 (1) ◽  
pp. 221 ◽  
Author(s):  
Carlos A. García-Alzate ◽  
Donald C. Taphorn ◽  
Cesar Roman-Valencia ◽  
Francisco A. Villa-Navarro
Keyword(s):  
New Species ◽  
River Basin ◽  
Lateral Line ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Pectoral Fins ◽  
Fin Rays ◽  
Magdalena River ◽  
A New Species ◽  
Pelvic Fin

<p>A new species, Hyphessobrycon natagaima, is described from the upper Magdalena River Basin in Colombia. It differs from all other species of Hyphessobrycon with a dark lateral stripe inhabiting the Magdalena River Basin: H. poecilioides, H. proteus and H. ocasoensis, by having eight to twelve pored lateral-line scales (vs. 14-26); four scales between the lateral line and the pelvic-fin insertions (vs. five or six); one tooth on the maxilla (vs. zero in H. poecilioides, and two to five in H. proteus; except H. ocasoensis, with one), a dark, interrupted, lateral stripe that is not in contact with the caudal peduncle spot (vs. absence of caudal spot in H. poecilioides, lateral stripe continued that is in contact with the caudal peduncle spot in H. ocasoensis). It has a rhomboid shaped caudal-peduncle spot that continues on to middle caudal-fin rays (vs. absence of caudal peduncle spot in H. poecilioides and caudal peduncle spot round and not continued on to middle caudal-fin rays in H. ocasoensis); and presence of hooks on all fins in mature males (vs. males with hooks on anal, pelvic and pectoral fins). Hyphessobrycon natagaima differs from H. ocasoensis, in addition to the above characters, by having four scale rows between the lateral line and the anal-fin origin (vs. six); three or four scale rows between the lateral line and the pelvic-fin insertions (vs. six); ten or eleven predorsal scales (vs. nine); i,9,i dorsal-fin rays (vs. ii,8,i); 18-20 branched anal-fin rays (vs. 21-22) and eleven branched pectoral-fin rays (vs. twelve). A key for the identification of Hyphessobrycon species present in the Magdalena River Basin is provided.</p>

A new species of Jupiaba Zanata, 1997 (Ostariophysi, Characiformes, Characidae) from the rio Tocantins drainage, Brazil

Zootaxa ◽  
2007 ◽  
Vol 1614 (1) ◽  
pp. 53-60 ◽  
Author(s):  
THIAGO N.A. PEREIRA ◽  
PAULO H.F. LUCINDA
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Pectoral Fin ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays

A new characid species, Jupiaba elassonaktis, is described from the rio Tocantins drainage. The new species is distinguished from its congeners by the following combination of characters: medial cusps of premaxillary teeth much larger than remaining cusps, dentary teeth decreasing abruptly in size from the fifth tooth backwards, first dorsaland anal-fin rays not prolonged by an elongate filament, presence of a vertically elongate humeral spot, 33–39 scales on lateral line, 5–7 scales series above lateral line, 9–11 pectoral-fin rays, and a incomplete series of median predorsal scales.

scholarly journals Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil

2005 ◽  
Vol 3 (3) ◽  
pp. 383-388 ◽  
Author(s):  
Carolina Ferreira Haluch ◽  
Vinícius Abilhoa
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Southeastern Brazil ◽  
Caudal Fin ◽  
Dark Stripe ◽  
Fin Rays ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species ◽  
Small Tributary

A new species of characid fish, Astyanax totae, is described from a small tributary in the upper drainage of the rio Iguaçu, Paraná basin, Brazil. The new species is distinct from most species of Astyanax by the vertically elongated humeral spot, slightly expanded above the lateral line to posterodorsal margin of opercle, followed by a midlateral dark stripe expanded from the humeral region to the median caudal-fin rays, maxilla with 2 to 5 teeth (usually 3) and 15 to 18 branched anal-fin rays.

Nandus prolixus, a new species of leaf fish from northeastern Borneo (Teleostei: Perciformes: Nandidae)

Zootaxa ◽  
2006 ◽  
Vol 1328 (1) ◽  
pp. 51 ◽  
Author(s):  
PROSANTA CHAKRABARTY ◽  
RONALD G. OLDFIELD ◽  
HEOK H. NG
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Slender Body ◽  
Dark Spot ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays

Nandus prolixus sp. nov. is described from the Sepilok River drainage in Sabah, northeastern Borneo. This species is distinguished from its only Sundaic southeastern Asian congener, N. nebulosus, in having a longer, more produced snout (25.7–30.6% HL vs. 18.5–26.1), more lateralline scales (33–37 vs. 24–34), more scales below the lateral line (12 vs. 10–11), fewer spines in the dorsal fin (XIV vs. XV–XVI), and fewer pectoral-fin rays (15–16 vs. 17–19). It differs from N. nandus (from India) in having fewer lateral-line scales (33–37 vs. 42–55), fewer scales above the lateral line (4–5 vs. 6–7), fewer scales below the lateral line (12 vs. 14–18), more dorsal spines (XIV vs. XII–XIII), and the absence (vs. presence) of a distinct dark spot at the base of the caudal peduncle. It differs from N. oxyrhynchus (from mainland southeastern Asia) in having a more slender body (body depth 37.6–40.5% SL vs. 41.3–44.1) and a less steeply sloping predorsal profile.

Cabdio crassus, a new species of cyprinid fish (Teleostei: Cyprinidae) from the Kaladan River of Mizoram, India

Zootaxa ◽  
2019 ◽  
Vol 4657 (1) ◽  
pp. 159-169
Author(s):  
LALRAMLIANA LALRAMLIANA ◽  
SAMUEL LALRONUNGA ◽  
MAHENDER SINGH
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Gene Sequence ◽  
Cyprinid Fish ◽  
Coi Gene ◽  
Pharyngeal Tooth ◽  
Fin Rays ◽  
A New Species ◽  
New Fish Species ◽  
Pelvic Fin

Cabdio crassus, a new fish species, is described from the Kaladan River in Mizoram, India. The new species is distinguished from all its congeners by having a ventral keel extending from the middle of the chest, between the posterior base of the pectoral fin and along the abdomen up to the anus (vs. more or less keeled median scales from mid-point of abdomen between posterior base of pelvic fin up to anus in all other Cabdio) and 11½–12½ branched anal-fin rays (vs. 7 in C. jaya and 9 in both C. morar and C. ukhrulensis). It is further distinguished from C. morar and C. ukhrulensis by possessing more lateral-line scales (45–51 vs. 38–42 in C. morar and 35–37 in C. ukhrulensis), more predorsal scales (20–23 vs. 17–18 in C. morar and 14 in C. ukhrulensis) and more lateral transverse scales (½7/1/3½ vs. 5/1/2 in both C. morar and C. ukhrulensis). It also differs from C. jaya in having fewer lateral-line scales (45–51 vs. 52–60), more lateral transverse scales (½7/1/3½ vs. 5/1/3) and more pharyngeal tooth-rows (3 vs. 2). Furthermore, the cytochrome c oxidase sub unit I (coi) gene sequence separates Cabdio crassus from all other Cabdio species (interspecies distance ranges from 7.8–12.3%). The anomalies observed among the GenBank sequences of the genus Cabdio are discussed and resolved. 

Hyphessobrycon oritoensis (Characiformes: Characidae), a new species from the Putumayo River drainage, Colombian Amazon

Zootaxa ◽  
2008 ◽  
Vol 1813 (1) ◽  
pp. 42 ◽  
Author(s):  
CARLOS A. GARCÍA-ALZATE ◽  
CÉSAR ROMÁN-VALENCIA ◽  
DONALD C. TAPHORN
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Posterior Border ◽  
Caudal Fin ◽  
River Drainage ◽  
Lateral Band ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Colombian Amazon ◽  
A New Species

Hyphessobrycon oritoensis (Characiformes: Characidae) is described from the Putumayo River drainage of the Colombian Amazon. The new species belongs to the H. heterorhabdus group and is distinguished from all other known species by the following combination of characters: iii,8 dorsal–fin rays, iv, 26–27 anal–fin rays, 19 teeth on dentary, 35 scales in longitudinal series, 10–11 perforated scales in lateral line, 7 scales between lateral line and dorsal–fin origin, 14 predorsal scales and a dark lateral band that extends from the posterior border of the humeral spot to the tips of the middle caudal fin rays.

scholarly journals Review of the perciform fish genus Symphysanodon Bleeker (Symphysanodontidae), with descriptions of three new species, S. mona, S. parini, and S. rhax

Zootaxa ◽  
2005 ◽  
Vol 996 (1) ◽  
pp. 1 ◽  
Author(s):  
WILLIAM D. ANDERSON ◽  
VICTOR G. SPRINGER
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Gill Arch ◽  
The Other ◽  
Caudal Vertebra ◽  
Morphometric Characters ◽  
Single Plate ◽  
Fin Rays ◽  
Three New Species ◽  
A New Species

Symphysanodon mona, a new species of perciform fish, is described from a single specimen collected in Mona Passage off the west coast of Puerto Rico. It differs from all other species of Symphysanodon in having fewer gillrakers on the first gill arch (4 or 5 + 19–21 = 24 or 25 total vs. 8–14 + 20–29 = 28–42 total) and, additionally, from the other two Atlantic species of the genus (S. berryi and S. octoactinus) in two other features of gill-arch morphology, viz., in having a ventral branch of the obliquus dorsalis 3 muscle (vs. its absence in the other two species) and in having a posteriorly projecting extension of the cartilaginous lateral end of ceratobranchial 4 (vs. its absence in the other two species; S. berryi has a small accessory cartilage associated with the lateral end of ceratobranchial 4 which may also be present in S. octoactinus). Symphysanodon parini, new species, known from 10 specimens collected over Sala y Gómez Ridge in the eastern South Pacific, can be distinguished from all other species of Symphysanodon, except S. maunaloae from the central and western Pacific, by the following combination of characters: segmented anal-fin rays 7, tubed lateral-line scales 45–50, total gillrakers on first gill arch 31– 34 (9 or 10 + 22–24), sum of lateral-line scales and gillrakers on individual specimens 77–84, depth of body 22.5–24.7 % SL (4.0–4.4 times in SL), length of depressed anal fin 24.8–26.4 % SL, hypurals 1 & 2 autogenous, hypurals 3 & 4 represented by a single plate, and first caudal vertebra without parapophyses. It is distinguished from S. maunaloae by differences in mean numbers of tubed lateral-line scales (mean = 47.89 for S. parini vs. mean = 44.94 for S. maunaloae) and pectoral-fin rays (mean = 16.90 for S. parini vs. mean = 16.13 for S. maunaloae) and by differences in a few morphometric characters. Symphysanodon rhax, new species, known from specimens collected off the Maldive Islands, northern Indian Ocean, is separable from all other species of Symphysanodon, except S. berryi from the Atlantic, by the following combination of characters: segmented rays in the anal fin 7, tubed lateral-line scales 50, gillrakers on the first gill arch 35–38 (10 or 11 + 25–27), sum of lateral-line scales and gillrakers on individual specimens 85–88, depth of body 20.6–24.8 % SL (4.0–4.9 times in SL), length of depressed anal fin 21.8–23.9 % SL, hypurals 1 & 2 autogenous, hypurals 3 & 4 represented by a single plate, and first caudal vertebra without parapophyses. It can be distinguished from S. berryi by its shorter second anal-fin spine and a suite of other morphometric characters. A key to Symphysanodon and a review of the other species of the genus are also presented.

Description ofSantelmoa elviraesp. nov. (Teleostei: Zoarcidae) from the Southern Ocean

2011 ◽  
Vol 91 (6) ◽  
pp. 1231-1235 ◽  
Author(s):  
Jesús Matallanas
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Lateral Line ◽  
Anterior Portion ◽  
Lower Lip ◽  
Bellingshausen Sea ◽  
Fin Rays ◽  
Lateral Branches ◽  
A New Species ◽  
Pelvic Fin

Santelmoais diagnosed by the following characters: anterior portion of frontals fused; scapular foramen open; anterior ceratohyal–posterior ceratohyal (=epihyal) articulation interdigitating; cranium narrowed; supratemporal commissure and occipital pores absent; intercalar reaching the prootic; ascending rami of the parasphenoid wing high; palatal arch well developed; posterior hyomandibular ramus short; post-temporal ventral ramus well developed; six branchiostegal rays; vertebrae asymmetrical; pelvic fin rays ensheathed; scales, lateral line, pyloric caeca, palatine and vomerine teeth present. A new species ofSantelmoa, Santelmoa elviraesp. nov., is described on the basis of four specimens collected from the Bellingshausen Sea, Southern Ocean, at a depth of 1837 m. The new species can be distinguished fromSantelmoa carmenae, the type species of the genus and the sole knownSantelmoaspecies, by the following characters: mouth inferior; vertical folds on posterior end of the upper lip and on the lower lip lobe; oral valve nearly reaching the anterior edge of vomer; two posterior nasal pores; lateral line double with ventral and medio-lateral branches; single row of palatine teeth; dorsal fin rays 108–111; anal fin rays 93–94; pectoral fin rays 18–19 and vertebrae asymmetrical, 26–27 + 90–93 = 116–119.

scholarly journals Astyanaxelachylepis, a new characid fish from the rio Tocantins drainage, Brazil (Teleostei: Characidae)

2005 ◽  
Vol 3 (3) ◽  
pp. 389-394 ◽  
Author(s):  
Vinicius A. Bertaco ◽  
Paulo H. F. Lucinda
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Caudal Peduncle ◽  
Pectoral Fins ◽  
Maxillary Tooth ◽  
Fin Rays

A new characid species, Astyanax elachylepis, is described from the rio Tocantins drainage. The new species is distinguished from its congeners by possessing 48-53 perforated scales along the lateral line, a large caudal-peduncle spot, the presence of bony hooks on dorsal, anal, pelvic, and pectoral fins of males, one or two vertically-elongated humeral spots, one maxillary tooth, and 22-27 branched anal-fin rays.

scholarly journals New species of Leporinus (Characiformes: Anostomidae) from the highlands of the Guiana Shield in Venezuela

2019 ◽  
Vol 17 (2) ◽  
Author(s):  
José L. O. Birindelli ◽  
Heraldo A. Britski ◽  
Francisco Provenzano
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Morphological Data ◽  
Guiana Shield ◽  
Caudal Peduncle ◽  
Digital Photograph ◽  
The Family ◽  
Fin Rays ◽  
A New Species

ABSTRACT A new species of Leporinus is described using morphological data and compared to all other species of the family. Specimens were illustrated using digital photograph, measured using digital calipers, and had teeth, scales, and fin rays counted under a stereomicroscope. The new species is distinguished from all other Anostomidae, except Anostomus anostomus, A. brevior, A. ternetzi, Hypomasticus despaxi, Leporinus arcus, and L. striatus, by having four dark longitudinal stripes on body. The new species is distinguished from aforementioned species by having terminal mouth with four teeth on the premaxilla, 12 series of scales around caudal peduncle, and 34 to 36 scales in the lateral line. The new species is remarkably similar to Leporinus arcus, which occurs on the opposite side of Guyana Shield highlands. The new species and L. arcus are possibly closely related to Leporinus gomesi, L. granti, L. lebaili, L. melanostictus, L. nijsseni, and L. santosi.

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