scholarly journals Note on a Leptocephalus Stage of the Conger

1920 ◽  
Vol 12 (2) ◽  
pp. 249-252 ◽  
Author(s):  
E. Ford
Keyword(s):  
The Body ◽  
Advanced Stage ◽  
Young Fish ◽  
Dorsal Fin ◽  
Close Resemblance ◽  
Stage Of Development ◽  
Fin Rays ◽  
Glass Aquarium

On September 17th, 1919, a specimen of Leptocephalus Congri vulgaris (L. Morrisii) was captured in “bottom” haul No. 69 of the young fish trawl in locality Eddystone bearing S. by W. (magnetic) 1½ miles, over a depth of 31 fathoms. It was alive and active when taken, measuring between 115 and 120 mm. in length, and has been kept alive up to the present date in a glass aquarium under circulation. It was at a fairly advanced stage of development, intermediate between those exhibited in Figs. 2 and 3, Pl. I of Schmidt (1), the dorsal fin commencing slightly farther back than in Fig. 3, and the median row of pigment spots along either side of the body not extending forward beyond about 1 cm. in front of the commencement of the dorsal fin. There is a close resemblance also to the specimen figured by Fulton (2), with the exception that, as just pointed out, the median row of pigment along the body on either side does not reach forward quite to the head, and in addition the pigment spots at the base of the dorsal fin rays are only two or three in number, situated at the extreme posterior end of the fin.Since the date of capture, observations 'have been made periodically and certain measurements taken as accurately as possible, but on account of the movements of the fish the latter could only be obtained approximately.

Description of a new deep-water species of Heteroclinus (Pisces: Teleostei: Clinidae), from southern Australia

Zootaxa ◽  
2021 ◽  
Vol 5082 (3) ◽  
pp. 286-293
Author(s):  
DOUGLASS F. HOESE ◽  
JOHN J. POGONOSKI
Keyword(s):  
New Species ◽  
South Australia ◽  
The Body ◽  
Dorsal Fin ◽  
Fin Rays ◽  
First Ray ◽  
Deep Water Species ◽  
Shallow Water Species ◽  
A New Species ◽  
Water Species

Heteroclinus argyrospilos, n. sp. is described as a new species from specimens sampled by sled and dredge in 55–100 m off South Australia and Western Australia. The species has a strongly compressed body and spatulate orbital tentacle similar to some shallow water species, particularly those of the Heteroclinus heptaeolus complex, which is characterized by having three segmented dorsal-fin rays, with the last two rays widely separate from the first ray. It is distinct from other Australian clinids in having two segmented dorsal-fin rays, well separated from the last dorsal-fin spine and a reduced lateral line on the body. It is known from a greater depth than other members of the genus.  

scholarly journals Chrysobrycon yoliae, a new species of stevardiin (Characiformes: Characidae) from the Ucayali basin, Peru

2014 ◽  
Vol 12 (2) ◽  
pp. 291-300 ◽  
Author(s):  
James Anyelo Vanegas-Ríos ◽  
María de las Mercedes Azpelicueta ◽  
Hernán Ortega
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
The Body ◽  
Pelvic Bone ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Adipose Fin ◽  
Fin Length ◽  
A New Species

Chrysobrycon yoliae, new species, is described from a drainage flowing into the río Yucamia basin, río Ucayali basin, Peru. Chrysobrycon yoliaeis readily distinguished from its congeners by the anterior tip of pelvic bone situated anterior to the fifth rib (vs. situated posterior to the fifth rib), the presence of 20-26 dentary teeth (vs. 11-19), and the possession of a terminal lateral-line tube between caudal-fin rays 10 and 11 (vs. the absence of this tube, except in C. eliasi). The new species differs from C. eliasiand C. myersiby the presence of teeth on third pharyngobranchial (vs. the absence of teeth on this bone) and also differs from C. eliasiby the dorsal-fin origin situated at vertical through anal-fin rays 5 to 7 (vs. located at vertical through anal-fin rays 8 to 10), the posterior extent of the ventral process of quadrate reaching the vertical through posterior margin of symplectic (vs. not reaching the vertical through posterior margin of symplectic), the dorsal-fin to adipose-fin length 26.8-28.8% SL (vs. 23.9-26.8% SL), and the body depth at dorsal-fin origin 34.4-42.2% SL (vs. 24.1-34.5% SL). A key for the identification of Chrysobryconspecies is provided.

Acanthocobitis pictilis, a new species of loach from Myanmar and Thailand (Teleostei: Nemacheilidae)

Zootaxa ◽  
2012 ◽  
Vol 3327 (1) ◽  
pp. 45 ◽  
Author(s):  
MAURICE KOTTELAT
Keyword(s):  
New Species ◽  
The Body ◽  
Valid Species ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species

Acanthocobitis pictilis, new species, is described from the Ataran drainage in Myanmar and the Mae Khlong drainage inThailand. It had earlier been misidentified as A. rubidipinnis. It is distinguished by, among other characters, its colour pat-tern, especially the dark brown triangular saddles in the upper half of the body, strongly slanted anteriorly and becomingalmost vertical posteriorly, becoming paler in the middle, and forming pairs of narrow saddles in large individuals; lateralline complete; 12 ½ or 13 ½ branched dorsal-fin rays. Acanthocobitis mandalayensis is a valid species, removed from the synonymy of A. botia.

An Eocene anchovy from Monte Bolca, Italy: The earliest known record for the family Engraulidae

2015 ◽  
Vol 153 (1) ◽  
pp. 84-94 ◽  
Author(s):  
GIUSEPPE MARRAMÀ ◽  
GIORGIO CARNEVALE
Keyword(s):  
New Genus ◽  
Morphological Structure ◽  
The Body ◽  
Western Tethys ◽  
Dorsal Fin ◽  
Fin Ray ◽  
The Family ◽  
Fin Rays ◽  
Single Well ◽  
Small Needle

AbstractEngraulids, also known as anchovies, are a distinctive group of clupeoid fishes characterized by a series of derived morphological features of the snout and infraorbital bones, suspensorium and branchial arches. Although anchovies are very abundant today, they are scarcely represented in the fossil record. A new genus and species of anchovy, †Eoengraulis fasoloigen. et sp. nov., is described from the Eocene (late Ypresian,c. 50 Ma) locality of Monte Bolca, Italy. It is based on a single well-preserved articulated skeleton that exhibits a unique combination of characters that supports its recognition as a new genus of the family Engraulidae, including: nine branchiostegal rays; 40 preural vertebrae and 17 pairs of pleural ribs; pleural ribs – preural vertebrae ratio 0.42; seven supraneurals; dorsal-fin origin at about mid-length of the body; about 16 dorsal-fin rays; anal-fin origin slightly behind the base of the last dorsal-fin ray; 19 anal-fin rays; seven pelvic-fin rays; and small needle-like pre-pelvic scutes. The morphological structure of the single available specimen suggests that †Eoengraulis fasoloiis the sister taxon of all other engrauline taxa. †Eoengraulis fasoloiis the oldest member of the family Engraulidae known to date. This taxon suggests that the earliest phases of diversification of engrauline anchovies probably occurred in the coastal palaeobiotopes of the western Tethys during Eocene time.

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 Seed production and growth of Neopomacentrus cyanomos (Bleeker, 1856) in captivity

2016 ◽  
Vol 63 (3) ◽  
Author(s):  
M. V. Rohini Krishna ◽  
M. K. Anil ◽  
P. Neethu Raj ◽  
B. Santhosh
Keyword(s):  
Larval Growth ◽  
The Body ◽  
Larval Rearing ◽  
Larval Body ◽  
Body Depth ◽  
Dorsal Fin ◽  
Adult Pattern ◽  
Fin Rays ◽  
In Captivity ◽  
Body Colouration

Development of the regal demoiselle Neopomacentrus cyanomos (Bleeker, 1856) from egg to maturation and spawning stage is described using hatchery reared specimens. Larval rearing of N. cyanomos was carried out using zooplankton as the starting feed up to the 10th day post-hatch (dph). Larval and post-larval growth was studied for a period of 340 dph. Caudal fin rays began to develop from 8th dph and the larval body depth increased considerably from 9th dph onwards. Towards the 10th dph, at about 5.7 mm total length (TL) half of the specimens underwent notochord flexion. Larvae exhibited decreased transparency with increased pigmentation of the pre-anal body, characterised by presence of stellate melanophores. Towards 15th dph, the pectoral, pelvic, dorsal, anal and caudal fins were visible with fin rays. The soft dorsal fin started showing pigmentation from 20th dph onwards and the spinous dorsal from 30th dph onwards. Towards 30th day, black pigments were found distributed all over the body. Pigmentation steadily increased from 30th day onwards and the juveniles fully attained the adult pattern of body colouration by about 90-100 days. First spawning occurred on the 340th dph at a size of 64-73 mm TL.

scholarly journals New species of Eugerres from the Usumacinta Province, México and Guatemala with a redescription of E. mexicanus (Steindachner, 1863) (Teleostei: Gerreidae)

2013 ◽  
Vol 11 (2) ◽  
pp. 307-318 ◽  
Author(s):  
Adrian F. Gonzalez-Acosta ◽  
Rocio Rodiles-Hernandez
Keyword(s):  
New Species ◽  
The Body ◽  
Body Depth ◽  
Morphometric Characters ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Fin Rays ◽  
Freshwater Habitats ◽  
Eye Diameter ◽  
Pelvic Fin

Eugerres castroaguirrei, new species is described from the río Grijalva-Usumacinta basin of southeastern Mexico and northern Guatemala. Eugerres castroaguirrei and E. mexicanus are distinguishable from their marine estuarine congeners by the dorsal-fin origin posterior to the insertion of the pectoral and pelvic fins, a shorter and broad based supraoccipital crest, and a distinct geographic distribution restricted to freshwater habitats. Eugerres castroaguirrei differs from E. mexicanus by diagnostic characters of the body skeleton: anterior process of supraoccipital convex, infraorbital 1 with foramen, premaxillary ascending process developed with margins curved, pharyngeal plate granular and not serially arranged, and dorsal and anal fin-rays reduced. Likewise, E. castroaguirrei is characterized by an oblong and laterally thicker body (37.6-58.5% HL); greater body depth (33.8-42.1% SL), and eye diameter (23.3-31.6% HL); in addition to 16 significant morphometric characters: length of the second dorsal-fin spine 23.2-34.2% SL; depressed second dorsal-fin spine (extending to base of third to fourth dorsal-fin rays); length of second anal-fin spine 11.1-20.6% SL, depressed second anal-fin spine extending to the base of third to fourth anal-fin rays not reaching the distal point of last anal-fin ray; pelvic-fin spine length 49.7-65.0% in the first pelvic-fin ray length

scholarly journals A second New Zealand species of the stargazer genus Kathetostoma (Trachinoidei: Uranoscopidae)

Zootaxa ◽  
2011 ◽  
Vol 2776 (1) ◽  
pp. 1 ◽  
Author(s):  
MARTIN F. GOMON ◽  
CLIVE D. ROBERTS
Keyword(s):  
New Species ◽  
New Zealand ◽  
The Body ◽  
Dorsal Fin ◽  
Nomen Dubium ◽  
Fin Rays ◽  
Short Body ◽  
A New Species ◽  
Depth Distributions

A new species of the uranoscopid genus Kathetostoma Günther, 1860, is described from New Zealand waters, where it is broadly sympatric with its sole local congener K. giganteum Haast, 1873. The new species is readily recognised by its broad, saddle-like dark bands that cross the body dorsally (versus bands absent or only faintly developed), rather robust and short body (vs slender and elongate), and fewer numbers of vertebrae (30–31 versus 33–34), dorsal fin rays (15–17 versus 17–19) and anal fin rays (15–16 versus 17–18). Although both species have extremely broad depth distributions, the new species appears to be restricted to less than about 500 m, with its greatest abundance at 100–300 m, while K. giganteum reaches over 1000 m, and has its greatest abundance at 200–400 m. A brief redescription of K giganteum is also provided. Kathetostoma fluviatilis Hutton, 1972, the oldest New Zealand name that applies to this genus, is regarded as a nomen dubium.

Two new dwarfgobies from the Southwestern Pacific Ocean (Teleostei: Gobiidae: Eviota)

Zootaxa ◽  
2012 ◽  
Vol 3572 (1) ◽  
pp. 33 ◽  
Author(s):  
DAVID W. GREENFIELD ◽  
RICHARD WINTERBOTTOM
Keyword(s):  
Papua New Guinea ◽  
Pupil Diameter ◽  
The Body ◽  
Sensory Canal ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Fin Rays ◽  
Pectoral Fin Rays ◽  
Fin Spines ◽  
Pelvic Fin

Two species of Eviota with red or orange bars crossing the body, a bifurcated 4th pelvic-fin ray with two long branches,and lacking many or all cephalic sensory-canal pores are described from Palau, Indonesia, and Papua New Guinea. Eviotajewettae has a dorsal/anal fin-ray formula of 8/8, 98% of the specimens lack all cephalic sensory-canal pores, 2–4 lowerpectoral-fin rays branched; non-filamentous dorsal-fin spines; short tubular anterior nares that are not black and are lessthan ½ pupil diameter in length, and five wide bars across the body. Eviota pinocchioi has a dorsal/anal fin-ray formulaof 9/8, always lacks the POP and IT pores and the PITO and AITO pores are fused in about 50% of the specimens, un-branched pectoral-fin rays, males with filamentous dorsal-fin spines, tubular anterior nares black and very long, almost equal to the pupil diameter, and six narrow bars across body.

scholarly journals Physoschistura dikrongensis, a new loach from Arunachal Pradesh, India (Teleostei: Nemacheilidae)

Zootaxa ◽  
2012 ◽  
Vol 3586 (1) ◽  
pp. 249 ◽  
Author(s):  
Y. LOKESHWOR ◽  
W. VISHWANATH
Keyword(s):  
New Species ◽  
Lateral Line ◽  
The Body ◽  
Arunachal Pradesh ◽  
Caudal Fin ◽  
Sensory Canal ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Brahmaputra Basin ◽  
A New Species

A new species of nemacheilid, Physoschistura dikrongensis, is described from the Brahmaputra basin in ArunachalPradesh, India. It is easily distinguishable from congeners in having two V-shaped dark brown bars across the caudal fintowards the distal end; 11–15 irregular bars on the body; dark brown mottled markings on the head; 4 simple and 8½branched dorsal-fin rays; 4 simple anal-fin rays; an incomplete lateral line; a forked caudal fin with 8+7 branched rays; a well-developed axillary pelvic lobe; suborbital flap in males, and nine preoperculo-mandibular sensory canal pores.

Sign in / Sign up

Export Citation Format

Share Document