scholarly journals First Record of Streaked Rabbitfish Siganus Javus (L., 1766) from the Iraqi Marine Waters, with Re Description of White-Spotted Rabbitfish Siganus Canaliculatus (Park, 1797)

2019 ◽  
pp. 2123-2128
Author(s):  
Abbas J. Al-Faisal ◽  
Ahmed CH. Al-Shamary ◽  
Usamah H. Yousif ◽  
Kadhim H. Younis
Keyword(s):  
First Record ◽  
The Body ◽  
Marine Waters ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Siganus Canaliculatus ◽  
Siganus Javus ◽  
Deep Body ◽  
Rabbitfish Siganus Canaliculatus

Two Siganid fishes were described in the current study, the first one is Siganus javus (Linnaeus, 1766) as a new record and the other Siganus canaliculatus (Park, 1797), which was collected from the Iraqi marine waters. The samples were collected during December 2018. Streaked rabbitfish S. javus is diagnosed by a deep body, 54.01% in standard length, depth  of caudal peduncle, 7.27%, total gill rakers 19 and silvery blue undulating lines on mid and lower sides of the body. Whereas the body depth of White-spotted rabbitfish S. canaliculatus was 39.08-42.66%, Caudal peduncle depth ranged from 5.21 to 5.66%, total gill rakers ranged from 22 to 24 and it  is distinguished by a numerous pearly blue to whitish spots on the nape and trunk.

Pseudobagarius eustictus, a new species of catfish from northern Laos (Siluriformes: Akysidae)

Zootaxa ◽  
2021 ◽  
Vol 4996 (2) ◽  
pp. 322-330
Author(s):  
HEOK HEE NG ◽  
MAURICE KOTTELAT
Keyword(s):  
New Species ◽  
The Body ◽  
Head Width ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Lower Jaw ◽  
Pectoral Spine ◽  
Eye Diameter ◽  
Adipose Fin ◽  
A New Species

Pseudobagarius eustictus, new species, is described from the Nam Heung drainage (a tributary of the Mekong River) in northern Laos. It is distinguished from congeners in having a unique combination of the following characters: a weakly-produced snout in which the upper jaw extends only slightly beyond the margin of the lower jaw when viewed ventrally, 3 tubercles on the posterior margin of the pectoral spine, eye diameter 8% HL, head width 24.1% SL, dark yellow dorsal and lateral surfaces of the head, pectoral spine lacking elongate extensions, pectoral fin reaching the pelvic-fin base when adpressed against the body, dorsolateral surfaces of body without longitudinal series of prominent tubercles, body depth at anus 13.7% SL, length of adipose-fin base 17.7% SL, caudal-peduncle depth 7.0% SL, and 33 vertebrae.  

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.

scholarly journals First record of Apistogrammoides pucallpaensis Meinken, 1965 (Perciformes, Cichlidae) for Brazil, in addition to fecundity information

2019 ◽  
Vol 31 ◽  
Author(s):  
Jomara Cavalcante de Oliveira ◽  
Jonas Alves de Oliveira ◽  
Danielle Pedrociane Cavalcante Rossato
Keyword(s):  
Aquatic Vegetation ◽  
Coastal Region ◽  
First Record ◽  
The State ◽  
The Body ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Black Stripe

Abstract Aim The objective of this work is to record the occurrence of Apistogrammoides pucallpaensis in Brazilian territory, since so far its distribution is restricted to Peru and Colombia. Methods The collections were carried out in the year of 2013, during the research of ichthyofauna of the region of Auati-Paraná, located in the Mamirauá Reserve in the state of Amazonas. In the floating aquatic vegetation was used net and on the coastal region rapichés. Apistogrammoides is the only one among Geophaginae that has 6-9 spines in the anal fin, while Apistogramma has 3-4. Results Note the presence of three evident mark on the caudal fin and presence of a black stripe on the side of the body that follows from the eye to the caudal peduncle feature thet differentiate the genre. Conclusions This work extends the distribution of A. pucallpaensis being the first record of the species for Brazil.

Liopropoma randalli, a new serranid (Teleostei: Perciformes) fish from the Indian Ocean

Zootaxa ◽  
2012 ◽  
Vol 3439 (1) ◽  
pp. 43 ◽  
Author(s):  
K. V. AKHILESH ◽  
K. K. BINEESH ◽  
WILLIAM T. WHITE
Keyword(s):  
Indian Ocean ◽  
Lateral Line ◽  
Color Pattern ◽  
Head Length ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Black Spots ◽  
The Indian Ocean ◽  
Pelvic Fin

A new serranid fish, Liopropoma randalli n. sp. is described from four specimens collected from the Indian Ocean offsouthwestern India and eastern Indonesia. It differs from all other species in the genus in its striking color pattern, a broadblack band from behind the eye to the caudal peduncle, semicircular dark-brown to black spots that cover the pink to red-dish body, and a combination of the following characters: 46 to 49 lateral line scales; 1–2 (4 as rudiments) + 12–13 (4–5as rudiments) gill rakers on the first arch (total 17–19); longest dorsal soft ray 2.1–2.3 in head length; 1st anal-fin spine10.4–12.2 in head length; 2nd anal-fin spine 4.4–4.9 in head length; pelvic fin relatively short, 5.1–5.7 in SL; and body depth 3.2–3.6 in SL.

Glyptothorax coracinus, a new species of hillstream catfish from Cambodia (Teleostei: Sisoridae)

Zootaxa ◽  
2008 ◽  
Vol 1839 (1) ◽  
pp. 60 ◽  
Author(s):  
HEOK HEE NG ◽  
WALTER J. RAINBOTH
Keyword(s):  
Dorsal Surface ◽  
Color Pattern ◽  
The Body ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Fin Ray ◽  
Eye Diameter ◽  
Adipose Fin ◽  
Brown Body ◽  
A New Species

Glyptothorax coracinus sp. nov. is described from the western face of the Krâvanh (Cardamom) Mountains and Dâmrei (Elephant) Mountains in southwestern Cambodia. It can be distinguished from congeners by its color pattern consisting of blackish brown body with indistinct pale longitudinal stripes on the lateral line and mid-dorsal regions of the body, pale markings on the nuchal plate absent, length of adipose-fin base 12.3–14.5% SL, length of caudal peduncle 18.6– 21.0% SL, depth of caudal peduncle 7.9–9.4% SL, body depth at anus 11.0–14.6% SL, eye diameter 6.3–7.2% HL, 36– 37 vertebrae, tubercles on the dorsal surface of the head with a single, median ridge, and anastomosing striae absent on thoracic adhesive apparatus that does not reach the level of the base of the last pectoral-fin ray.

scholarly journals FIRST RECORD ON ODONTANTHIAS FLAGRIS YOSHINO AND ARAGA, 1975 (PERCIFORMES: SERRANIDAE) IN INDONESIAN WATERS

2018 ◽  
Vol 36 (1) ◽  
pp. 7-13
Author(s):  
Teguh Peristiwady
Keyword(s):  
Lateral Line ◽  
Lower Limb ◽  
First Record ◽  
Morphological Features ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
North Sulawesi ◽  
Fin Rays ◽  
Pelvic Fin

Two specimens of Odontanthias flagris have been caught from Bitung, North Sulawesi in June 2010. Previously, nown locations of this species are Okinawa and Nishino-shima, Japan. O. flagris is very similar with O. rhodopeplus. They shares following characters: dorsal fin rays X, 13; anal fin rays III, 7; pectorals fin rays 17-18; scales above lateral line 7; scales below lateral line 19 and gill rakers on lower limb 28. Characters differing O. flagris from O. rhodopeplus, O. chrysostictus and other six species appear in the percentage of orbit diameter. In addition, O. flagris has shorter pelvic fin rays but longer caudal peduncle and third dorsal fin spine. Its morphological features, distribution, remarks and photo of species are given in this paper.

scholarly journals Genetic and ecomorphological divergence between sympatric Astyanax morphs from Central America

2021 ◽  
Author(s):  
Carlos A Garita-Alvarado ◽  
Marco Garduño-Sánchez ◽  
Marta Barluenga ◽  
Claudia Patricia Ornelas-García
Keyword(s):  
Genetic Differentiation ◽  
Central America ◽  
Trophic Level ◽  
Strong Correlation ◽  
Trophic Ecology ◽  
Ecological Speciation ◽  
The Body ◽  
Adaptive Divergence ◽  
Body Depth ◽  
Deep Body

Ecological and morphological divergence within populations can be a signal of adaptive divergence, which can maintain intraspecific polymorphisms and promote ecological speciation in the event of reproductive isolation. Here, we evaluate correlations among morphology, trophic ecology, and genetic differentiation between two divergent morphs (elongate and deep-body) of the fish genus Astyanax in the San Juan River basin in Central America, to infer the putative evolutionary mechanism shaping this system. We collected the two morphs from three water bodies and analyzed: 1) the correlation between body shape and the shape of the premaxilla, a relevant trophic structure, 2) the trophic level and niche width of each morph, 3) the correspondence between trophic level and body and premaxillary shape, and 4) the genetic differentiation between morphs using mitochondrial and nuclear markers. We found a strong correlation between the body and premaxillary shape of the morphs. The elongate-body morph had a streamlined body, a premaxilla with acuter angles and a narrower ascending process, and a higher trophic level, characteristic of species with predatorial habits. By contrast, the deep-body morph had a higher body depth, a premaxilla with less acute angles, and a broader trophic niche, suggesting generalist habits. Despite the strong correlation between morphological and ecological divergence, the morphs showed limited genetic differentiation, supporting the idea that morphs may be undergoing incipient ecological speciation, although alternative scenarios such as stable polymorphism or plasticity should also be considered. This study provides evidence about the role of ecological factors in the diversification processes in Astyanax.

Cobitis xui, a new species of spined loach (Teleostei: Cobitidae) from the Pearl River drainage in southern China

Zootaxa ◽  
2019 ◽  
Vol 4604 (1) ◽  
pp. 161
Author(s):  
XI-CHANG TAN ◽  
PENG LI ◽  
TIE-JUN WU ◽  
JIAN YANG
Keyword(s):  
Southern China ◽  
Morphological Characters ◽  
The Body ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Spined Loach ◽  
Caudal Fin ◽  
Eye Diameter ◽  
The Pearl River ◽  
A New Species

A new spined loach of the genus Cobitis Linnaeus is described from the Buquan River, located in Guangxi Zhuang Autonomous Region, China. The species differs from other members of Cobitis in China by a combination of morphological characters, none of them unique: body depth 14.3‒18.4% SL; lamina circularis long and knife-shaped; Gambetta zones present on the dorsolateral sides of the body (L1‒L5); 8‒11 large transverse elongated blotches on L5; 9‒12 large transverse elongated blotches on L1; maxillary barbels longer than eye diameter; 4‒5 narrow rows of dark spots on the caudal fin; caudal fin with 14 branched rays; a rectangular spot slightly smaller than eye diameter on the upper side of caudal fin base; and caudal-peduncle depth 79.5‒93.1% its length.

Botia udomritthiruji, a new species of botiid loach from southern Myanmar (Teleostei: Botiidae)

Zootaxa ◽  
2007 ◽  
Vol 1608 (1) ◽  
pp. 41-49 ◽  
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Color Pattern ◽  
The Body ◽  
Central Portion ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Vertical Bars ◽  
A New Species

Botia udomritthiruji sp. nov. is described from the Tenasserim River drainage in southern Myanmar. It can be distinguished from congeners by its color pattern, consisting of five dark vertical bars on the body, with the central portion of these bars paler than its edges; with increasing age, the edges of these bars become more irregular and darker, and irregular dark spots on the pale interspaces begin to form, sometimes fusing with the edges of the vertical bars. In morphology, it differs from congeners by a combination of: body depth at anus 23.4–27.7% SL, caudal peduncle depth 15.9– 18.7% SL, and 12 dorsal-fin rays. Evidence for considering B. macrolineata a junior synonym of B. dario and for considering B. rostrata a species distinct from B. almorhae is also presented here.

A new sisorid catfish of the genus Pseudolaguvia (Teleostei: Sisoridae) from Nagaland, north-eastern India

Zootaxa ◽  
2021 ◽  
Vol 5082 (1) ◽  
pp. 77-86
Author(s):  
JAYASIMHAN PRAVEENRAJ ◽  
BALAJI VIJAYAKRISHNAN ◽  
AKUM LIMA ◽  
SHANTABALA DEVI GURUMAYUM
Keyword(s):  
New Species ◽  
The Body ◽  
Eastern India ◽  
Pectoral Fin ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Ray ◽  
North Eastern ◽  
Fin Length

Pseudolaguvia vespa, new species, is described from the Tsücha River, Mokokchung district, Nagaland, India. The new species can be distinguished from congeners in having the following combination of characters: length of dorsal-fin spine 12.3–16.8% SL, a smooth anterior edge of the dorsal-fin spine, caudal peduncle depth 9.0–10.5% SL, body depth at anus 15.6–17.7% SL, caudal fin length 20.7–24.5% SL, pectoral fin length 20.1–24.1% SL, interorbital distance 22.7–28.1% SL, thoracic adhesive apparatus extending to midway between base of last pectoral-fin ray and pelvic-fin origin, and live specimens with two irregular, chrome-yellow bands on the body.  

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