scholarly journals A new species of Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the río Madre de Dios basin, Peru

2016 ◽  
Vol 14 (1) ◽  
Author(s):  
Luiz Fernando Caserta Tencatt ◽  
Hans-Georg Evers
Keyword(s):  
New Species ◽  
Anterior Portion ◽  
Black Stripe ◽  
Dorsal Fin ◽  
Madre De Dios ◽  
Black Spots ◽  
Black Blotch ◽  
Pectoral Spine ◽  
Black Pigmentation ◽  
A New Species

ABSTRACT A new species of Corydoras is described from the río Madre de Dios basin, Peru. The new species can be distinguished from its congeners by presenting the following features: a longitudinal black stripe along midline of flank; mesethmoid short, with anterior portion poorly developed; serrations on posterior margin of pectoral spine directed towards the tip of the spine; dorsal fin with the region of the first branched ray, including membrane, with concentration of black pigmentation, the remaining areas with irregular black blotches; absence of a vertically elongated black blotch across the eyes; conspicuously rounded moderately-developed black spots on the snout; and ventral expansion of infraorbital 1 moderately developed.

scholarly journals Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

2016 ◽  
Vol 14 (1) ◽  
Author(s):  
Luiz Fernando Caserta Tencatt ◽  
Marcelo Ribeiro de Britto ◽  
Carla Simone Pavanelli
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Unique Combination ◽  
Southern Brazil ◽  
Anterior Portion ◽  
Dorsal Fin ◽  
Black Spots ◽  
Coastal Rivers ◽  
Pectoral Spine ◽  
A New Species

ABSTRACT The taxon known as Corydoras paleatus carries one of the most complex taxonomic histories among Corydoradinae catfishes. A comprehensive review of specimens attributed to that species from several localities was carried out, allowing the clear recognition of C. paleatus and also of a new species previously misidentified as C. paleatus , described herein. Corydoras paleatus can be distinguished from its congeners by presenting the following unique combination of features: perpendicularly directed serrations along entire posterior margin of the pectoral spine; three large black blotches along midline of flank; hyaline or black pectoral fin; and transversal black bars on caudal-fin lobes. Corydoras paleatus is known from the lower rio Paraná basin, coastal rivers from Southern Brazil and Uruguay and rio Uruguai basin. The new species can be distinguished from its congeners by having the following unique combination of features: three large black blotches along midline of flank; three nasal pores; mesethmoid short; infraorbital 2 not in contact with compound pterotic; striated black spots from the snout tip to nuchal plate region; markedly rounded snout; and anterior portion of dorsal fin spotted. The new species is known from the upper rio Uruguai basin, from the rivers Canoas, do Peixe and Pelotas.

scholarly journals Two new species of Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the rio Madeira basin, Brazil

2016 ◽  
Vol 14 (1) ◽  
Author(s):  
Luiz Fernando Caserta Tencatt ◽  
Willian Massaharu Ohara
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Ventral Surface ◽  
Anterior Portion ◽  
Dorsal Fin ◽  
Black Spots ◽  
Coloration Pattern ◽  
Two New Species ◽  
Black Blotch ◽  
Rio Madeira

Abstract Two new species of Corydoras are described from the rio Madeira basin, Brazil. The intermediate long-snouted new species can be distinguished from its congeners by presenting the following combination of features: posterior margin of dorsal-fin spine with laminar serrations directed towards the origin of the spine; presence of two longitudinal black stripes on flanks; anterior portion of dorsal fin with sparse black chromatophores, not forming any conspicuous pattern; absence of a conspicuous black marbled coloration pattern on head; black spots on caudal fin, some spots arranged, forming transversal bars; and brownish dorsal-fin spine. The short-snouted new speciescan be distinguished from its congeners by the following combination of features: short mesethmoid; posterior laminar expansion of infraorbital 2 very reduced, not in contact with compound pterotic; two or three longitudinal black stripes on flanks; absence of an oblique or vertical black blotch across the eye; anterior portion of dorsal fin with sparse black chromatophores, not forming any conspicuous pattern; and ventral surface of trunk naked or covered by sparse platelets.

scholarly journals Microglanis carlae, a new species of bumblebee catfish (Siluriformes: Pseudopimelodidae) from the río Paraguay basin in Paraguay

2008 ◽  
Vol 6 (3) ◽  
pp. 425-432 ◽  
Author(s):  
Héctor S. Vera Alcaraz ◽  
Weferson J. da Graça ◽  
Oscar A. Shibatta
Keyword(s):  
New Species ◽  
Species Complex ◽  
Anterior Margin ◽  
Color Pattern ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
A New Species

Microglanis carlae, new species, is described from the río Paraguay basin and distinguished from its congeners by the following combination of characters: paired and anal fins mottled or with thin faint bands, trunk with dark-brown saddles, anterior margin of pectoral spine with serrations retrorse proximally and antrorse distally, tip of pectoral spine as a distinct bony point, continuous portion of lateral line reaching vertical through last dorsal-fin ray, caudal peduncle with irregularly shaped, faint to dark blotch, maxillary barbel surpassing vertical through dorsal-spine origin, and dark bar on posterior flank continuous from base of adipose fin to that of anal fin. The new species is included in the Microglanis parahybae species complex on the basis of color pattern.

A new deepwater gurnard of the genus Pterygotrigla (Scorpaeniformes: Triglidae) from the southwestern Indian Ocean

Zootaxa ◽  
2019 ◽  
Vol 4706 (1) ◽  
pp. 189-200
Author(s):  
TAKUJI YATO ◽  
ELAINE HEEMSTRA
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Dorsal Surface ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Black Blotch ◽  
Opercular Spine ◽  
A New Species ◽  
Southwestern Indian Ocean

A new species of deepwater gurnard, Pterygotrigla (Otohime) madagascarensis sp. nov. is described, based on two specimens collected on the upper continental slope south of Madagascar, in the southwestern Indian Ocean. The new species belongs to the tropical Indo-Pacific subgenus Otohime in having a short rostral projection, short posttemporal spine, long opercular spine and no cleithral spine. It is most similar to P. (O.) multipunctata, and P. (O.) urashimai, in having no large blotch on the first dorsal fin, a jet-black blotch and no white ocellus on the inner pectoral-fin surface, with no scales on the breast and front of the pectoral-fin base. However, the new species differs from the latter two species by the combination of the following characters: first dorsal-fin spines 7, second dorsal-fin rays 12, dusky rays on the inner pectoral-fin surface, one row of blackish botches on second dorsal fin, and no papillae on the dorsal surface of oral cavity. A key is provided for the twelve Pterygotrigla species now in the subgenus Otohime. 

Barbus niluferensis, a new species of barbel (Teleostei: Cyprinidae) from Nilüfer River, Turkey, with re-description of B. oligolepis

Zootaxa ◽  
2009 ◽  
Vol 1981 (1) ◽  
pp. 15-28 ◽  
Author(s):  
DAVUT TURAN ◽  
MAURICE KOTTELAT ◽  
F. GÜLER EKMEKÇİ
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Slender Body ◽  
Valid Species ◽  
Marmara Sea ◽  
Dorsal Fin ◽  
Proximal Half ◽  
Black Spots ◽  
Fin Ray ◽  
A New Species

Barbus niluferensis, new species, is described from the Nilüfer River, Marmara Sea drainage, Turkey. It is distinguished by a weaker last simple dorsal-fin ray, serrated along the proximal half of its posterior margin, a maximum known size of 146 mm SL, a slender body, a short head, a short caudal fin, and larger irregular black blotches on the back and the flanks, and small black spots on the head, extending downwards to the cheeks. Barbus oligolepis Battalgil, 1941, is a valid species known from the rivers draining to the southern shore of the Marmara Sea.

Microlepidogaster negomata, a new hypoptopomatine catfish (Loricariidae: Hypoptopomatinae) from Rio São Francisco basin, southeastern Brazil

Zootaxa ◽  
2017 ◽  
Vol 4276 (2) ◽  
pp. 233 ◽  
Author(s):  
FERNANDA O. MARTINS ◽  
ARIELI M. CHEROBIM ◽  
BRENO N. ANDRADE ◽  
FRANCISCO LANGEANI
Keyword(s):  
New Species ◽  
River Basins ◽  
Southeastern Brazil ◽  
Neural Spine ◽  
Pectoral Girdle ◽  
Anterior Portion ◽  
Dorsal Fin ◽  
Lateral Portion ◽  
A New Species ◽  
Lateral Plates

The number of species of Microlepidogaster recently increased considerably, the genus presently comprises six species distributed in the Paraná, São Francisco, and Jequitinhonha river basins. A new species of Microlepidogaster is herein described from the upper Rio São Francisco basin, which can be distinguished from all congeners by having two exclusive features within the genus: skin over swimbladder opening with two to five reduced unperforated platelets, and ventral laminar expansion of coracoid enclosing completely or almost completely the arrector fossa of the pectoral girdle. In addition, other features to recognize this species are: snout covered by many small plates bearing slender pointed odontodes; presence of iris operculum; exposure of pectoral girdle restricted to the lateral portion; presence of pectoral axillary slit only in juveniles; anterior portion of compound supraneural plus first dorsal-fin proximal radial contacting the neural spine of the eighth or ninth vertebra; first anal-fin pterygiophore covered only by skin; and uninterrupted, long median and mid-dorsal series of lateral plates. 

A new species of Bryconops Kner (Characiformes: Iguanodectidae) from the Rio Maicuru, lower Amazon basin, Brazil

Zootaxa ◽  
2018 ◽  
Vol 4514 (3) ◽  
pp. 372 ◽  
Author(s):  
CÁRLISON SILVA-OLIVEIRA ◽  
FLÁVIO C. T. LIMA ◽  
JUAN D. BOGOTÁ-GREGORY
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Distal Margin ◽  
Middle Portion ◽  
Black Stripe ◽  
The Third ◽  
Dorsal Fin ◽  
Left Margin ◽  
Dark Patch ◽  
A New Species

A new species of Bryconops is described from the rio Maicuru, a tributary of the left margin of the lower Amazon River, Pará, Brazil. Bryconops chernoffi new species, differs from all its congeners by the presence of an elongated dark patch of pigmentation immediately after the posterodorsal margin of the opercle, running vertically from the supracleithrum to the distal margin of the cleithrum (vs. absence of a similar blotch), and by a dark dorsal fin with a narrow hyaline band at middle portion of dorsal-fin rays (vs. dorsal fin hyaline or with few scattered chromatophores). It differs further from all its congeners, except B. colanegra, by the presence of a blurred black stripe at the anal fin base. It differs from B. colanegra by possessing fewer predorsal scales (8–9 vs. 10–11) and in that the third infraorbital contacts the preopercle ventrally (vs. third infraorbital not contacting preopercle ventrally). The new species is assigned to the subgenus Creatochanes by the number of maxillary teeth, and ossification and denticulation of the gill rakers. 

scholarly journals Channa pardalis, a new species of snakehead (Teleostei: Channidae) from Meghalaya, northeastern India

2016 ◽  
Vol 8 (3) ◽  
pp. 8583 ◽  
Author(s):  
J.D. Marcus Knight
Keyword(s):  
New Species ◽  
Lateral Line ◽  
The Body ◽  
Colour Pattern ◽  
Northeastern India ◽  
Dorsal Fin ◽  
Black Spots ◽  
Fin Rays ◽  
Orbital Region ◽  
A New Species

Channa pardalis, a new species of snakehead, is described from Khasi Hills, Meghalaya, northeastern India.  This species can be distinguished from its congeners by a unique colour pattern consisting of numerous large black spots on the post-orbital region of the head, opercle and body; a broad white and black margin to the dorsal, anal and caudal fins; 36–37 dorsal fin rays; 24–25 anal fin rays; 44–45 pored scales on the body and two scales on the caudal fin base; 4½ scales above lateral line and 6½ scales below lateral line; 45 vertebrae and the palatine with two rows of teeth: outer row with numerous minute teeth and inner row with short, stout inward curved teeth.  

scholarly journals A new species of Lipogramma from deep reefs of Roatan, Honduras (Teleostei, Grammatidae)

ZooKeys ◽  
2018 ◽  
Vol 809 ◽  
pp. 79-95
Author(s):  
Luke Tornabene ◽  
D. Ross Robertson ◽  
Carole C. Baldwin
Keyword(s):  
New Species ◽  
Habitat Partitioning ◽  
Dorsal Fin ◽  
Black Blotch ◽  
Dorsal Portion ◽  
Western Caribbean ◽  
Deep Reefs ◽  
A New Species ◽  
Bright Blue ◽  
Blue Coloration

A new species of Lipogramma is described from submersible collections at 122–165 m depth off the coast of Roatan, Honduras, in the western Caribbean. The new species is distinguished from all other species in the genus by its bright blue coloration on the head, nape, and dorsal portion of the trunk beneath the spinous dorsal fin, a prominent round black blotch below the origin of the spinous dorsal fin, and a high number of gill rakers. A molecular phylogeny based on mitochondrial and nuclear genes shows that the new species belongs to a clade containing L.levinsoni, L.regia, and L.anabantoides. At Roatan, submersible observations of this and other Lipogramma species indicate clear, interspecific habitat partitioning by depth and substrate.

Coloconger maculatus sp. nov., a species of short-tail eel from eastern Taiwan (Anguilliformes: Colocongridae)

Zootaxa ◽  
2021 ◽  
Vol 5016 (2) ◽  
pp. 271-282
Author(s):  
HSUAN-CHING HO ◽  
CHI-NGAI TANG ◽  
TAH-WEI CHU
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Large Female ◽  
Dorsal Fin ◽  
Posterior Nostril ◽  
Fin Rays ◽  
Black Blotch ◽  
Eye Diameter ◽  
Fin Length ◽  
A New Species

A new species of Coloconger is described from a large female collected off eastern Taiwan. It can be distinguished from congeners by having a large black blotch on rear portion of tail; posterior end of tail white; and combination of characters: head small 15.7% TL; 4 supratemporal pores, middle 2 in pair; 7 supraorbital pores, 2 pores over posterior nostril; 12 or 14 infraorbital pores; 14 preoperculomandibular pores; 226 dorsal-fin rays and 122 anal-fin rays; preanal vertebrae 77 and total vertebrae 145; rictus through a vertical of posterior margin of pupil; snout shorter than eye diameter; distance between origins of pectoral and dorsal fins 69.4% pectoral-fin length; and body brownish gray dorsally, light gray ventrally, and dorsal fin dark gray. Data and variations of Coloconger japonicus found in Taiwan are provided and discussed.  

Sign in / Sign up

Export Citation Format

Share Document