Characidium chancoense, a new species of South American darter from the Río Cauca drainage, Colombia (Characiformes: Crenuchidae)

Zootaxa ◽  
2020 ◽  
Vol 4768 (2) ◽  
pp. 249-263 ◽  
Author(s):  
HENRY D. AGUDELO-ZAMORA ◽  
ARMANDO ORTEGA-LARA ◽  
DONALD C. B. TAPHORN
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Sexually Dimorphic ◽  
South American ◽  
Lateral Line Scale ◽  
Pigmentation Pattern ◽  
Line Scale ◽  
Vertical Bars ◽  
A New Species

Characidium chancoense new species, is described from the transandean upper Río Cauca drainage in Colombia. It can be distinguished from all congeners by its pigmentation pattern that consists of 7–12 vertical bars, most of which are cuneate-shaped with the vertex ending on or just below the lateral-line scale series, except for the last 1–4, which are dorsoventrally elongate rectangular bars that extend well below the lateral line. Characidium chancoense is sympatric with C. caucanum Eigenmann, C. phoxocephalum Eigenmann, C. cf. zebra Eigenmann and C. cf. boavistae Steindachner. Unlike C. caucanum and C. cf. boavistae, C. chancoense does not appear to be sexually dimorphic. 

scholarly journals On a new species of the genus Moenkhausia Eigenmann (Ostariophysi: Characidae)

Zootaxa ◽  
2007 ◽  
Vol 1525 (1) ◽  
pp. 61-68 ◽  
Author(s):  
PAULO H.F. LUCINDA ◽  
LUIZ R. MALABARBA ◽  
RICARDO C. BENINE
Keyword(s):  
New Species ◽  
Distribution Pattern ◽  
Lateral Line ◽  
The Body ◽  
Dark Spot ◽  
Lateral Line Scale ◽  
Caudal Fin ◽  
Body Side ◽  
Line Scale ◽  
A New Species

A new species of the genus Moenkhausia is described from the middle portions of the Rio Tocantins and tentatively from the Rio Apure in Venezuela, Rio Orinoco drainage. It is diagnosed by the presence of a dark spot in the half proximal length of the upper caudal-fin lobe, and by the presence of a large, irregularly shaped humeral spot located above the sixth to ninth perforated lateral line scale which is more posteriorly positioned along the body side in relation to other members of the genus. The distribution pattern of the new species is discussed.

Leporinus amazonicus, a new anostomid species from the Amazon lowlands, Brazil (Osteichthyes: Characiformes)

Zootaxa ◽  
2008 ◽  
Vol 1815 (1) ◽  
pp. 35 ◽  
Author(s):  
GERALDO MENDES DOS SANTOS ◽  
JANSEN ZUANON
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Body Height ◽  
Color Pattern ◽  
Lateral Line Scale ◽  
Fish Family ◽  
Subsistence Fisheries ◽  
Line Scale ◽  
Different Color ◽  
A New Species

Leporinus amazonicus, a new species of anostomid fish, is described from the central portion of the Amazon lowlands. It is a medium-sized fish (up to 250 mm SL) with streamlined body (maximum body height approximately 25% of SL) and high lateral line scale counts (45–47). Leporinus amazonicus is morphologically similar to the slender bodied species L. cylindriformis Borodin, 1929 and L. brunneus Myers, 1950, but differs from them by the higher lateral line scale count (41–43 in L. cylindriformis and 36–42 in L. brunneus) and by a different color pattern. Moreover, L. amazonicus is apparently restricted to the white waters of the Amazon lowlands whereas L. cylindriformis and L. brunneus are known only from clear and black waters of several of the Rio Amazonas tributaries. Despite intensive collecting efforts historically developed in Brazilian Central Amazon, just a few specimens of L. amazonicus were caught, indicating that the new species is relatively rare in that area and apparently do not join in large schools. However, this supposed rarity may be biased by the concentration of our collecting efforts around Manaus, which may represent a marginal distribution of this species. Nevertheless, the presence of a new species of a taxonomically well-known fish family in an area intensively exploited by commercial and subsistence fisheries evidences the need for fish species surveys in the Amazon, even in supposedly well sampled sites and around the most populous areas.

Revision of the genus Parequula (Pisces: Gerreidae) with a new species from southwestern Australia

Zootaxa ◽  
2012 ◽  
Vol 3425 (1) ◽  
pp. 42 ◽  
Author(s):  
YUKIO IWATSUKI ◽  
JOHN J. POGONOSKI ◽  
PETER LAST
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Nominal Species ◽  
Lateral Line Scale ◽  
Type Specimens ◽  
Southwestern Australia ◽  
Dorsal Fin ◽  
Line Scale ◽  
Fin Ray ◽  
A New Species

The genus Parequula, which has long been considered monotypic, is reviewed with a new species described fromsouthwestern Australia on the basis of 21 types and 17 non-type specimens (42–81 mm in standard length); its onlycongener, P. melbournensis (Castelnau), is also redescribed. Parequula elongata n. sp. differs from P. melbournensis inhaving a more slender body, a lower soft anal-fin ray count (14–15, mode 15 vs. 16–18, mode 17), a lower pored lateral-line scale count (34–35, mode 34 vs. 37–40, mode 38), and the dorsal fin with a reddish upper margin when fresh (vs.semi-translucent to bluish with a narrow, parallel, yellowish vertical line on each fin membrane and a yellowish fin marginin P. melbournensis). Furthermore, the head profile of P. elongata n. sp. is nearly straight to slightly convex, whereas P.melbournensis is distinctly concave in outline above the eyes. Nominal species (junior synonyms) of P. melbournensis are discussed and a key to the two species is also provided.

A new species of Characidium (Characiformes: Crenuchidae) from the rio Parnaíba basin, northeastern Brazil

Zootaxa ◽  
2018 ◽  
Vol 4514 (1) ◽  
pp. 77 ◽  
Author(s):  
ANGELA M. ZANATA ◽  
TELTON P. A. RAMOS ◽  
LEONARDO OLIVEIRA-SILVA
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Northeastern Brazil ◽  
Caudal Peduncle ◽  
Adipose Fin ◽  
Vertical Bars ◽  
A New Species ◽  
Parnaíba Basin

Characidium tapuia, a new species apparently endemic to the rio Parnaíba basin, Brazil, is described. The new species is easily distinguished from congeners, except C. lanei, C. nana, and C. samurai, by having a broad and conspicuous dark lateral stripe, extending from the tip of snout to the end of caudal peduncle and by the absence of dark vertical bars on body of specimens larger than 23.0 mm SL. Characidium tapuia differs from the aforementioned species by a series of features, including 12 circumpeduncular scales (vs. 13 or 14 in C. lanei and C. samurai), presence of parietal branch of the supraorbital canal (vs. absence in C. lanei and C. nana), complete lateral line and adipose fin present (vs. lateral line incomplete and adipose fin absent in C. nana), and midlateral stripe with irregular borders (vs. lateral stripe with overall straight borders in C. samurai). 

A new syntopic species of small barb from the Western Ghats of India (Teleostei: Cyprinidae)

Zootaxa ◽  
2018 ◽  
Vol 4434 (3) ◽  
pp. 529 ◽  
Author(s):  
UNMESH KATWATE ◽  
PRADEEP KUMKAR ◽  
RAJEEV RAGHAVAN ◽  
NEELESH DAHANUKAR
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Western Ghats ◽  
Lateral Line Scale ◽  
Dorsal Fin ◽  
Line Scale ◽  
Mitochondrial Cytochrome B ◽  
Western Ghats Of India ◽  
The Western Ghats ◽  
Pelvic Fin

A new species of the cyprinid genus Pethia is described from the Hiranyakeshi, a tributary of the Krishna River system in the Western Ghats mountain ranges of peninsular India. The new species, Pethia sahit, is syntopic—and shoals together—with Pethia longicauda, a species described recently from the same river. Pethia sahit is distinguished from P. longicauda and its congeners by a combination of characters like, incomplete lateral line with 3–6 pored scales; 19–22 scales in lateral series; 4½ scales between dorsal-fin origin and lateral-line row and 2½ scales between lateral line row and pelvic-fin origin; intercalated scale row originates above and after the 6th scale of the lateral-line scale row; dorsal fin originating behind the pelvic-fin origin; 4+13 abdominal and 12 caudal vertebrae; dorsal, pectoral, pelvic, anal and caudal fins without any bands or spots, deep yellow-orange in color or deep red with a pale tint of orange in mature males; a dark-black vertically elongate humeral spot, overlapping the 4th lateral-line scale, extending over the base of one scale above and below the 4th scale; caudal peduncle spot dark, covering 14th–16th scales in lateral-line scale row. Genetic analysis based on the mitochondrial cytochrome b gene indicates that P. sahit and P. longicauda are not sister taxa. Further, P. sahit has no genetically proximate congener in the Western Ghats region, and differs from known congeners from south and southeast Asia, for which genetic data are available, with genetic distance ranging from 11.8–16.4%. 

scholarly journals A new species of Steleops Enderlein, and a Colombian record of S. pulcher New (Psocodea: ‘Psocoptera’: Psocidae)

Zootaxa ◽  
2011 ◽  
Vol 2735 (1) ◽  
pp. 23 ◽  
Author(s):  
RANULFO GONZÁLEZ OBANDO ◽  
ALFONSO NERI GARCÍA ALDRETE ◽  
NANCY SORAYA CARREJO
Keyword(s):  
New Species ◽  
The Other ◽  
Sexually Dimorphic ◽  
South American ◽  
South American Species ◽  
Mato Grosso ◽  
Genital Structure ◽  
A New Species

Steleops buitrerensis n. sp. is here described and illustrated; it constitutes the 14 th species known in the genus, the 12 th known in the neotropics, and the first in the genus to be recorded in Colombia. The forewings and antennae are sexually dimorphic, and the head pattern of coloration, as well as the genital structure, separates it from the other described species. The location of the types is indicated in the description, and a key is included to separate it from the other South American species. S. pulcher New, previously known only in Mato Grosso, Brazil, is here recorded in Colombia.

scholarly journals A review of the species in the Apogon fasciatus group with a description of a new species of cardinalfish from the Indo-West Pacific (Perciformes: Apogonidae)

Zootaxa ◽  
2005 ◽  
Vol 924 (1) ◽  
pp. 1 ◽  
Author(s):  
THOMAS H. FRASER
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Pectoral Fin ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Fin Rays ◽  
Vertical Bars ◽  
Ventral Edge ◽  
A New Species ◽  
Pectoral Fin Rays

Nine nominal, Indo-West Pacfic species are treated: Apogon fasciatus (White, 1790), Apogon quadrifasciatus Cuvier in Cuvier & Valenciennes, 1828, Apogon monogramma Günther, 1880, Apogon septemstriatus Günther, 1880, Apogon evanidus Fowler 1904, Apogon elizabethae (Jordan & Seale, 1905), Apogon quinquestriatus Regan, 1908, Apogon kiensis Jordan & Snyder, 1901 and Apogon bryx Fraser, 1998. Four species treated as valid have VII first-dorsal spines: Apogon fasciatus with two brownish stripes on each side of the head and body to caudal peduncle and a faint, variable stripe along a portion of the lateral-line, 16 (15) pectoral-fin rays, and 14–17 (12, 13 or 18) gill rakers, Apogon quinquestriatus with four brownish stripes on each side of head and body, two reaching the caudal peduncle, 15 pectoral-fin rays, and 15 gill rakers, Apogon septemstriatus with three brownish stripes on each side of head and body, three reaching the caudal peduncle, 14 (13) pectoral-fin rays, and 14–16 gill rakers, Apogon pleuron, new species, with two brownish stripes on each side of head and body reaching the caudal peduncle, ventral edge of midlateral stripe with vertical bars, 15 (14 or16) pectoral-fin rays, and 17–20 (15, 16 or 21) gill rakers. Two species treated as valid have VI first-dorsal spines: Apogon bryx with three brownish stripes on each side of head and body, two reaching the caudal peduncle, 14–15 pectoral-fin rays, and 22–23 (21 or 24) gill rakers, Apogon kiensis, with two brownish stripes on each side of head and body reaching the caudal peduncle, 14–15 pectoral-fin rays, and 16–18 (15 or 19-20) gill rakers. The long recognized name, Apogon quadrifasciatus, is synonymous with Apogon fasciatus.

A new species of Lepidotrigla from the South China Sea off Vietnam (Teleostei: Scorpaeniformes: Triglidae)

Zootaxa ◽  
2020 ◽  
Vol 4877 (2) ◽  
pp. 373-385
Author(s):  
ARTEM M. PROKOFIEV ◽  
TAKUJI YATO
Keyword(s):  
New Species ◽  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
Lateral Line Scale ◽  
The South ◽  
China Sea ◽  
Line Scale ◽  
Central Vietnam ◽  
A New Species

A new species of the gurnard genus Lepidotrigla is described from the South China Sea off southernmost central Vietnam. Lepidotrigra firmisquamis sp. nov. is most similar to L. alata and L. marisinensis and co-occurs with L. marisinensis in the Bays of Nha Trang and Van Phong, but can be easily distinguished from both species by the well developed preocular spines and postorbital groove and by a slightly lower lateral-line scale count (54–58 instead of 58–64). A comparison with all Lepidotrigla species known from the South China Sea is presented.

scholarly journals Apareiodon agmatos, a new species from the upper Mazaruni river, Guyana (Teleostei: Characiformes: Parodontidae)

Zootaxa ◽  
2008 ◽  
Vol 1925 (1) ◽  
pp. 31-38 ◽  
Author(s):  
DONALD C. TAPHORN B. ◽  
HERNÁN LÓPEZ-FERNÁNDEZ ◽  
CALVIN R. BERNARD
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Pigmentation Pattern ◽  
A New Species

Apareiodon agmatos, new species, is described from the upper Mazaruni River and its tributaries, Essequibo Basin, in western Guyana. The new species is distinguishable from all other species of Parodontidae by having an incomplete lateral line. The scales of A. agmatos are more numerous than in any previously described parodontid. It has five incisorlike pedunculate teeth on the premaxilla aligned in a straight row, each with a large central spatulate cusp bordered on each side by a minute lateral cusp. The maxilla has two or infrequently three incisors. It shares an unusual pigmentation pattern of one dorsomedial and four lateral black stripes with A. gransabana, which was described from the neighboring upper Río Caroní drainage, Orinoco Basin. Apareiodon agmatos also shares with A. gransabana and Parodon guyanensis a higher number (5 versus 4) of teeth than other members of the genus in the premaxillary. Apareiodon agmatos and A. gransabana may also share an absence of thickening of the anterior pleural ribs noted by Starnes & Schindler (1993) for A. gransabana. While beyond the scope of this work, these features may prove sufficient to diagnose this group of species from the genus Apareiodon as currently recognized.

Two new species of loaches from the Irrawaddy River basin, Chin State, Myanmar (Teleostei: Cypriniformes: Nemacheilidae)

Zootaxa ◽  
2020 ◽  
Vol 4895 (1) ◽  
pp. 86-102
Author(s):  
MENG-FANG CHEN ◽  
KHIN MAR MYINT ◽  
LING CHU ◽  
XIAO-YONG CHEN
Keyword(s):  
New Species ◽  
River Basin ◽  
Lateral Line ◽  
Posterior Part ◽  
Main Channel ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Upper Jaw ◽  
Vertical Bars ◽  
A New Species

Schistura falamensis, a new species of nemacheilid loach, is described from the main channel of the Manipur River in the Irrawaddy River basin, Chin State, western Myanmar. It differs from other congeners of the genus Schistura by a combination of the following characters: 5–8 vertical bars on body; indistinct bars in front of dorsal-fin origin; bars on posterior part of body regular, twice as wide as interspace; black caudal basal bar dissociated, short, not reaching ventral extremity; males with suborbital flap; lateral line complete; and processus dentiformis weak. Schistura altuscauda is a new species described from the Htin stream, Mindat Town, Chin State, Myanmar. It can be distinguished from other congeners by a combination of the following characters: high caudal peduncle (14.0–20.3% SL), strong processus dentiformis on upper jaw; 7–19 bars on flank of body, bars in front of dorsal fin obviously thinner than those behind, sometimes fused in front of dorsal fin; lateral line complete; males with prominent suborbital flap; and pelvic lobe present. 

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