Paraschistura kermanensis, a new stone loach species from southeastern Iran (Teleostei: Nemacheilidae)

Zootaxa ◽  
2019 ◽  
Vol 4638 (4) ◽  
pp. 571-583
Author(s):  
GOLNAZ SAYYADZADEH ◽  
AZAD TEIMORI ◽  
HAMID REZA ESMAEILI
Keyword(s):  
Nearest Neighbour ◽  
Stone Loach ◽  
Nucleotide Substitutions ◽  
Caudal Peduncle ◽  
Neighbour Distance ◽  
Dorsal Fin ◽  
Mtdna Coi ◽  
Pelvic Fin

Paraschistura kermanensis from the endorheic Kerman-Naein basin in Iran is distinguished from its closest congeners (P. abdolii, P. delvarii, P. kessleri and P. naumanni) by lacking scales on the flanks anterior to the dorsal-fin origin, having scales on the caudal peduncle, and having the pelvic-fin origin situated anterior to or below the vertical through the dorsal-fin origin. It is also characterised by six fixed diagnostic nucleotide substitutions and a K2P nearest neighbour distance of 4% to P. abdolii in the mtDNA COI barcode region. 

Stolephorus grandis, a new anchovy (Teleostei: Clupeiformes: Engraulidae) from New Guinea and Australia

Zootaxa ◽  
2021 ◽  
Vol 5004 (3) ◽  
pp. 481-489
Author(s):  
HARUTAKA HATA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
New Guinea ◽  
Gill Arch ◽  
The Other ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Pelvic Fin

The new anchovy Stolephorus grandis n. sp., described on the basis of 10 specimens collected from Papua, Indonesia, and Australia, closely resembles Stolephorus mercurius Hata, Lavoué & Motomura, 2021, Stolephorus multibranchus Wongratana, 1987, and Stolephorus rex Jordan & Seale, 1926, all having double pigmented lines on the dorsum from the occiput to the dorsal-fin origin, a long maxilla (posterior tip just reaching or slightly beyond the posterior margin of preopercle), and lacking a predorsal scute. However, the new species clearly differs from the others in having fewer gill rakers (35–39 total gill rakers on the first gill arch in S. grandis vs. > 38 in the other species), a greater number of vertebrae (total vertebrae 42–43 vs. fewer than 41), longer caudal peduncle (21.9–23.7% SL vs. < 20.8%), and the depressed pelvic fin not reaching posteriorly to vertical through the dorsal fin-origin (vs. reaching beyond level of dorsal-fin origin).

Paracobitis abrishamchiani, a new crested loach from the southern Caspian Sea basin (Teleostei: Nemacheilidae)

Zootaxa ◽  
2019 ◽  
Vol 4545 (3) ◽  
pp. 375 ◽  
Author(s):  
HAMED MOUSAVI-SABET ◽  
SABER VATANDOUST ◽  
MATTHIAS F. GEIGER ◽  
JÖRG FREYHOF
Keyword(s):  
New Species ◽  
Middle East ◽  
Caspian Sea ◽  
Colour Pattern ◽  
Nucleotide Substitutions ◽  
The Caspian Sea ◽  
Dorsal Fin ◽  
Mtdna Coi ◽  
River Drainages ◽  
Southern Caspian Sea

Paracobitis abrishamchiani, new species, is described from the southern Caspian Sea basin, where it is found in the Babol, Haraz, Siah, Tajan, Talar and Kashpal River drainages. It is distinguished from P. hircanica and P. atrakensis, the two other Paracobitis species known from the Caspian Sea basin, by having scales on the flank posterior to the dorsal-fin origin and from its congeners in the Middle East by the position of its dorsal-fin origin, having a roundish posterior narial opening, and a colour pattern consisting of many widely spaced brown spots and blotches. It is further characterized by six diagnostic nucleotide substitutions and a minimum K2P distance of 4.3% to P. persa and 4.6% to P. malapterura in the mtDNA COI barcode region. 

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.

Changes in the site specificity of Gyrodactylus turnbulli Harris, 1986 (Monogenea) during infections of individual guppies (Poecilia reticulata Peters, 1859)

1988 ◽  
Vol 66 (12) ◽  
pp. 2854-2857 ◽  
Author(s):  
P. D. Harris
Keyword(s):  
Population Size ◽  
Poecilia Reticulata ◽  
Site Specificity ◽  
Nearest Neighbour ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Neighbour Distance ◽  
Infection Age

Gyrodactylus turnbulli Harris, 1986 infected the caudal peduncle (42% of all flukes) and caudal fin (40%), of guppies (Poecilia reticulata Peters, 1859), occurring less frequently on the pectoral (8%), dorsal (5%), pelvic (2%), and anal (1%) fins. This distribution of parasites on the fish and their crowding varied with infection age. On newly infected guppies, G. turnbulli occurred less frequently on the peduncle, and mean nearest-neighbour distance was not correlated with population size. Over the first 4 days of the infection the proportion of parasites on the peduncle increased to 60%, and mean nearest-neighbour distance became correlated with population size. In declining infections (day 6 onwards) the proportion on the peduncle declined, and mean nearest-neighbour distance increased independent of population size. This pattern suggests random colonization of the fins followed by migration to the peduncle, from which dispersal occurred during the declining phase of the infection.

Sardinella ventura n. sp. (Actinopterygii: Clupeiformes: Clupeidae), a new sardine from Mauritius

Zootaxa ◽  
2021 ◽  
Vol 4975 (2) ◽  
pp. 389-396
Author(s):  
HARUTAKA HATA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Dark Spot ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Morphometric Characters ◽  
Dorsal Fin ◽  
Lateral Scale ◽  
Pelvic Fin

The new sardine Sardinella ventura n. sp. (Teleostei: Clupeiformes: Clupeidae) is described on the basis of 10 specimens collected from Mauritius. The new species is most similar to Sardinella dayi Regan 1917 in having non-deciduous scales with pores and discontinuous striae, a dark spot on the dorsal-fin origin, the pelvic fin with 8 rays, and similar number of gill rakers, in addition to very similar numbers of keeled scutes. However, the new species is distinguished from S. dayi by having a shorter caudal peduncle [6.2–7.6% SL (mean 7.0%) vs. 8.2–12.0% (9.2%) in S. dayi], larger eye [8.4–9.9% (9.0%) vs. 6.8–8.0% (7.4%)] and orbit [9.6–12.3% (10.7%) vs. 8.5–10.2% (9.3%)], longer pectoral [21.0–22.7% (21.5%) vs. 17.0–21.0% (19.8%)] and pelvic fins [12.5–13.5% (12.8%) vs. 10.4–12.2% (11.2%)], and a greater numbers of pseudobranchial filaments [17–19 (modally 17) vs. 18–22 (19)], lateral scale rows in longitudinal series [41–43 (41) vs. 38–42 (40)] and transverse scales [11 or 12 (12) vs. 11]. There were significant differences in seven meristic and 14 morphometric characters between the two species. 

scholarly journals Microlepidogaster dimorpha, a new species of Hypoptopomatinae (Siluriformes: Loricariidae) from the upper rio Paraná system

2011 ◽  
Vol 9 (1) ◽  
pp. 79-86 ◽  
Author(s):  
Fernanda de Oliveira Martins ◽  
Francisco Langeani
Keyword(s):  
New Species ◽  
Anterior Margin ◽  
Neural Spine ◽  
Pectoral Fin ◽  
Caudal Peduncle ◽  
Posterior Portion ◽  
Dorsal Fin ◽  
A New Species ◽  
Median Plate ◽  
Pelvic Fin

Microlepidogaster dimorpha, new species, is described from tributaries of rio Grande, upper rio Paraná system. Microlepidogaster dimorpha differs from M. perforatus and M. longicolla by having first dorsal-fin proximal radial attached to the neural spine of seventh vertebra, with posterior portion contacting also the eighth centrum (vs. first dorsal-fin proximal radial attached to the neural spine of eighth or ninth vertebra in M. perforatus, and to the neural spine of tenth or eleventh vertebra in M. longicolla); 29-30 vertebrae (vs. 31 in M. perforatus and 31-33 in M. longicolla); 18-21 mid-dorsal plates (vs. 9-13 in M. perforatus, and 13-17 in M. longicolla); deeper caudal peduncle (10.0-11.4% in SL vs. 7.7-8.5% in M. perforatus, and 5.4-7.3% in M. longicolla); greater distance between dorsal-fin origin and anal-fin insertion (19.4-23.8% in SL vs. 16.4-18.8% in M. perforatus, and 14.7-16.2% in M. longicolla); and nostril width markedly wider in males than in females (vs. approximately equivalent in size for both sexes, slightly wider in males than in females in M. perforatus, and equivalent in size for both sexes in M. longicolla). Microlepidogaster dimorpha also differs from M. perforatus by presence of the iris operculum (vs. absence); median plate series complete to caudal peduncle end (vs. median plate series truncated, with last two plates of dorsal and ventral series contacting in midline); greater head depth (43.4-53.1% vs. 40.7-42.3% in HL); greater orbital diameter (13.6-18.5% vs. 11.1-13.5% in HL); pelvic-fin first unbranched ray longer in males than in females (vs. equivalent in size in both sexes); and supraneural without paired anterior processes (vs. processes present). Additionally, M. dimorpha can be distinguished from M. longicolla by having anterior margin of snout with a paired rostral plate (vs. snout with small plates, naked in the anterior margin); by pectoral-fin axillary slit present, even in adult specimens (vs. pectoral-fin axillary slit present only in juvenile specimens); longer pectoral-fin unbranched ray (20.0-23.8% vs. 13.4-16.2% in SL in M. longicolla).

scholarly journals Morphometric features of topmouth gudgeon Pseudorasbora parva (Temminck & Schlegel, 1846) in the Hirfanlı Reservoir, Turkey

2020 ◽  
Vol 7 (1) ◽  
pp. 8
Author(s):  
Semra Benzer
Keyword(s):  
Fork Length ◽  
Pseudorasbora Parva ◽  
Pectoral Fin ◽  
Caudal Peduncle ◽  
Morphometric Characters ◽  
Topmouth Gudgeon ◽  
Dorsal Fin ◽  
Peduncle Length ◽  
Fin Length ◽  
Pelvic Fin

The aim of this study was to some morphometric characteristics of Pseudorasbora parva from Hirfanlı Reservoir, Turkey. A morphological analysis of 29 morphometric characters were performed. These characteristics head length; preorbital distance; eye diameter; postorbital distance; head depth; predorsal distance; prepelvic distance; preanal distance; pectoral fin–pelvic fin (P-V) distance; pelvic fin– anal fin (V-A) distance; body depth (18 perpendicular); dorsal fin (anterior end)-anal fin distance (Da-A); dorsal fin (posterior end)–anal fin distance (Dp-A); postdorsal distance; postanal distance; caudal (C) peduncle length (dorsal); caudal peduncle length (ventral); caudal peduncle depth; dorsal fin (D) base length; anal fin (A) base fin length; pectoral fin (P) length; pelvic (V) fin length; caudal upper lobe length; caudal fork length; caudal lower lobe length; dorsal fin length; anal fin length; gape. The samples were measured weight to the nearest 0.01g and total, fork and standard length to the nearest 0.01 mm. The total length (TL) ranged from 4.10 cm to 9.30 cm and body weight ranged from 0.600 to 7.137 g.Keywords: Pseudorasbora parva; topmouth gudgeon; morphometric properties; Hirfanlı Reservoir

Oxynoemacheilus cilicicus, a new nemacheilid loach from the Göksu River in southern Anatolia (Teleostei: Nemacheilidae)

Zootaxa ◽  
2020 ◽  
Vol 4808 (2) ◽  
pp. 284-300 ◽  
Author(s):  
CÜNEYT KAYA ◽  
DAVUT TURAN ◽  
ESRA BAYÇELEBİ ◽  
GÖKHAN KALAYCI ◽  
JÖRG FREYHOF
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Lateral Line ◽  
Eastern Mediterranean ◽  
Molecular Data ◽  
Nucleotide Substitutions ◽  
Eastern Mediterranean Sea ◽  
Dorsal Fin ◽  
Mtdna Coi ◽  
Southern Turkey

Oxynoemacheilus cilicicus, new species, is described from the Göksu, Seyhan and Ceyhan rivers in southern Turkey. It is distinguished from other Oxynoemacheilus species in the Eastern Mediterranean Sea basin by possession of an incomplete lateral line, terminating before the vertical of the dorsal-fin origin or slightly behind the dorsal-fin base, a deeply emarginate caudal fin, no suborbital groove in male individuals, and a series of dark-brown bars on the flank not interrupted along the lateral line. Molecular data suggest that Oxynoemacheilus cilicicus is characterised by 22 variable nucleotide substitutions and a minimum K2P distance of 4.09% with O. panthera in the mtDNA COI barcode region. 

Larval development in the lutjanid subfamily Lutjaninae (Pisces): the Indo-Pacific genus Pinjalo

Zootaxa ◽  
2008 ◽  
Vol 1760 (1) ◽  
pp. 37 ◽  
Author(s):  
JEFFREY M LEIS
Keyword(s):  
Larval Development ◽  
Body Shape ◽  
The Body ◽  
Caudal Peduncle ◽  
Spine Morphology ◽  
Dorsal Fin ◽  
Close Relationship ◽  
First Time ◽  
Fin Spines ◽  
Pelvic Fin

The larvae of the two species of Pinjalo are described for the first time based on seven specimens of P. pinjalo (4.3–7.5 mm) and 23 specimens of P. lewisi (5.6–15.0 mm) captured in plankton tows and midwater trawls in the eastern Indian and western Pacific Oceans. Identification was confirmed by fin meristics. These deep-bodied, compressed larvae share all the characteristics of lutjanid larvae, and have some of the most well-developed head spination and fin spines of any lutjanids. The robust spines of the dorsal, anal and pelvic fins bear strong serrations. The preopercular spines are particularly enlarged, some bear fine serrations, and the anterior end of the maxilla also has fine serrations: these fine serrations are rare in lutjanine lutjanids. The two species of Pinjalo can be distinguished by the meristics of dorsal and anal fins, the relative lengths of the first spine of the dorsal fin and the spine of the pelvic fin. The larvae have distinctive pigment on the dorsal fin, head and caudal peduncle. The body shape, pigment pattern, fin-spine morphology, and the fine serrations on the head spines of the two Pinjalo species are very similar to the larvae of Lutjanus erythropterus and L. malabaricus, and may indicate a close relationship among these four species.

scholarly journals A new species of Hemibrycon (Characiformes: Characidae), a freshwater fish from the Sierra Nevada of Santa Marta, Caribbean drainage, Colombia

2015 ◽  
Vol 7 (1) ◽  
pp. 89-97 ◽  
Author(s):  
Carlos A. García-Alzate ◽  
César Román Valencia ◽  
Donald C. Taphorn
Keyword(s):  
New Species ◽  
Sierra Nevada ◽  
Lateral Line ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Fin Rays ◽  
Adipose Fin ◽  
A New Species ◽  
Pelvic Fin

Hemibrycon is a group of freshwater characid fish species first recognized by Günther (1864) as a subgenus of Tetragonopterus, and now included in the subfamily Stevardiinae. There are 21 speciesrecorded from the rivers of Colombia, but only one species, H.santamartae, has been reported previously in drainages of the Sierra Nevada de Santa Marta. Hemibrycon sierraensis n. sp. is described fromthe Río Gaira, Caribbean coastal drainage. It is distinguished from all congeners by having in life a bright red adipose fin (vs. hyaline or transparent)that turns dark brown in specimens preserved in alcohol. It differs from Hemibrycon beni, H. boquiae, H. brevispini, H. colombianus, H. mikrostiktos, H. metae, H. microformaa, H. palomae and H. rafaelense in having a vertically elongate humeral spot that extends 3-4 longitudinal scale series below the lateral line. It differs from H. divisorensis, H. pautensis and H. santamartae by having the last dorsal-fin ray unbranched; and from H. pautensis by the number of scale series between the lateralline and the pelvic-fin insertions. It differs from H. divisorensis in the number of unbranched anal-fin rays, and the number of teeth on the dentary and maxilla. It differs from H. santamartae in the number of supraneurals, caudal peduncle depth, head length and orbital diameter.

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