428 Works

First Southern Hemisphere records of the deepwater scorpionfish Phenacoscorpius megalops (Scorpaenidae)

Kunto Wibowo & Hiroyuki Motomura
Two specimens of Phenacoscorpius megalops Fowler, 1938, collected at 481 m depth off Malo Island, Vanuatu, represent the first records of the species in the Southern Hemisphere. All previous records were restricted to the northwestern and northern Pacific Ocean.

On the occurrence of the Synodontis eupterus (Mochokidae) in the Adriatic drainage system of Croatia: a case of an introduced aquarium species and suggestions for alien species detection measures

Jakov Dulčić, Pero Tutman & Branko Dragičević
On November 8th 2017, a specimen of featherfin squeaker has been collected in the Mala Neretva River in Croatia (Adriatic drainage system). This is the first record of the featherfin squeaker, Synodontis eupterus, an ornamental fish species, in the freshwaters of Croatia. This case appeal for policies to prevent and detect accidental introductions.

Notes on the feeding habits of Gaidropsarus guttatus (Collett, 1890) from Faial Island, Azores, NE Atlantic, PT

Madaíl Ávila, Donzília Nunes, Leonardo F. Machado & João P. Barreiros
Gaidropsarus guttatus is a nocturnal predator that dwells in rocky bottoms of Macaronesian coastal areas. There are no studies as yet on the feeding ecology of this species. This paper describes the feeding habits of this quite unknown species, based on a sample from Faial Island, Azores, Portugal. This sample is composed of 82 specimens collected between August 1997 and April 1999, both in intertidal pools and sub-tidal shallow waters (max. depth 10 m). 95%...

A first record of the vanishing silhouette goby Silhouettea evanida (Gobiidae) in Indonesian waters

Muhammad Iqbal, Doni Setiawan, Riza Kadarisman, Arum Setiawan & Indra Yustian
In April 2017, some individuals of the vanishing silhouette goby Silhouettea evanida were identified and photographed in the estuary of the Sembilang River, South Sumatra province, Indonesia. There is no previous report on the occurrence of Silhouettea evanidain Indonesia, and this observation constitutes a first record for the country.

Growth of the oblique-banded grouper (Epinephelus radiatus) on the coasts of Reunion Island (SW Indian Ocean)

Kélig Mahé, Khalef Rabhi, Elise Bellamy, Romain Elleboode, Yoann Aumond, Jérôme Huet, Pierre Cresson & David Roos
The oblique-banded grouper, Epinephelus radiatus (Day, 1968), occurred within the whole Indo- West Pacific where it is harvested by small-scale coastal fisheries. The aim of this study was to estimate the growth of this species at Reunion Island (South-West Indian Ocean) since no study investigated this topic so far. Fifty-seven individuals were sampled in the landings of the French local artisanal fisheries from March 2014 to March 2015. The relationships between two types of body...

Premier signalement d’Aulotrachichthys sajademalensis (Kotlyar, 1979) à l’île de la Réunion (océan Indien)

Jean-Claude Quéro & Jérôme Spitz
Parmi les poissons récoltés en surface à l’île de La Réunion (océan Indien), suite à l’éruption volcanique du Piton de La Fournaise en avril 2007, se trouvait un petit spécimen (1,8 cm de longueur standard) d’Aulotrachichthys sajademalensis. Cette espèce de Trachichthyidae a été décrite d’après un spécimen capturé au banc de Saya de Malha (Kotlyar, 1979). Cette nouvelle observation étend vers le sud l’aire de répartition connue pour l’espèce.

Description of a new cichlid species from Lake Malawi, with reexamination of Cynotilapia afra (Günther, 1893) and Microchromis zebroides Johnson, 197

Patrick Tawil
A reexamination of the type specimens of the cichlid genera Cynotilapia and Microchromis from Lake Malawi is given, revealing significant differences between them, and confirming the validity of Microchromis. Microchromis zebroides, type species of the genus, is reexamined with additional material. Microchromis aurifrons, a new species is described. It differs from the type species of the genus, with which it lives sympatrically in the lake, by wider melanic pattern on the flanks and absence of...

Melatonin, the time keeper: biosynthesis and effects in fish

Jack Falcón, Laurence Besseau, Elodie Magnanou, Maria-Jesus Herrero, Masanori Nagai & Gilles Boeuf
Melatonin is the time-keeping molecule of vertebrates. The daily and annual variations of its rhythmic production allow synchronizing metabolism, physiological functions and behaviour to the environment changes. In fish, melatonin is produced by the photoreceptors of the pineal organ and retina as well as by other retinal cell types in the inner nuclear and ganglion cell layers. In most species, the melatonin rhythm displays a high-at-night profile, resulting from the circadian control of the arylalkylamine...

A review of amphidromous freshwater fishes of the Chocó biogeographical region (Colombia and Ecuador): diversity, ecology, fisheries and conservation

Gian Carlo Sánchez-Garcés
Amphidromy is a specialized form of diadromy developed by tropical and temperate fish and invertebrates. In the tropics, most amphidromous fish belong to the Gobiidae and Eleotridae families. Knowledge on the taxonomy, phylogenetics, ecology, fisheries and conservation of this group of fishes has been gathered in the last 30 years mainly in the Indo-Pacific and Caribbean regions, with the tropical Eastern Pacific region largely overlooked in literature. Here, we provide a state of the art...

First observation of intersex in Trachurus trachurus (Carangidae) from the Eastern Coast of Algeria: are nematodes the causative factor?

Keltoum Ichalal, Zouhir Ramdane, Mokrane Iguer-Ouada & Mohammed Kacher
Intersexuality was reported at macroscopic and microscopic levels in horse mackerel, Trachurus trachurus (Linnaeus, 1758) from Algerian coast. Macroscopically, intersex specimens were characterized by the simultaneous presence of both male and female gonads. Gonads were typical ovaries with a testicular component embedded in one of the two ovaries. Histological analysis revealed the simultaneous presence of female and male germ cells. Intersex was also observed, but exclusively at microscopic level, in normal females with no macroscopic...

Range extensions of four species of parrotfishes (Scaridae) in the northern Gulf of California, Mexico

Ollin T. Gonzalez-Cuellar, Héctor Reyes-Bonilla, Manon Fourrière, Mario Rojo, Arturo Hernández-Velasco, Israel Sánchez-Alcántara & Tad Pfister
We present new records extending the known geographic range of four species of parrotfishes (family Scaridae) in the Gulf of California, Mexico: Scarus compressus, S. ghobban, S. perrico and S. rubroviolaceus. The presence of these species in the northern gulf is relevant considering their ecological role as consumers of algae and mollusks, and as producers of carbonated sediments in the reefs, which is not currently played by any other fish in that area. The records...

Use of tide pools as a spawning site by the bocon toadfish Amphichthys cryptocentrus (Batrachoidiformes: Batrachoididae), state of Maranhão, Brazil

Glínia K. F. Coelho, Luly de A. Nogueira, Pâmela S. de Brito, Nivaldo M. Piorski & Jorge L. S. Nunes
This note reports the first record of Amphichthys cryptocentrus using tide pools on the beaches of the state of Maranhão, Brazil as a spawning site and nursery.

First record of Butis koilomatodon (Bleeker, 1849) (Gobiiformes: Eleotridae) for the Maranhão state, northeastern Brazil: a case of bioinvasion

Erick C. Guimarães, Pâmella S. de Brito & Felipe P. Ottoni
The invasive eleotrid species Butis koilomatodon (Bleeker, 1849) is recorded for the first time in the Maranhão state, on Araçagy Beach in São Luis, northeastern Brazil.

Occurrence of juveniles Squatina oculata Bonaparte, 1840 (Elasmobranchii: Squatinidae) in the Strait of Sicily (Central Mediterranean)

Bruno Zava, Fabio Fiorentino & Fabrizio Serena
Four juveniles of Squatina oculata, ranging between 291 and 564 mm total length, were caught on September 2007 by a bottom trawler in the coastal waters of the Strait of Sicily. Due to the rarity of such species, main biometrics are given. The size of the specimens suggests that all fish are juveniles, with one of them having size close to that at birth. These findings suggested that this “critically endangered” species is still able...

Spinal deformities in Amazon sailfin catfish Pterygoplichthys pardalis (Siluriformes: Locariidae), an introduced fish in the Palizada River (Southeastern Mexico)

Armando T. Wakida-Kusunoki, Luis E. Amador-Del Ángel & Claudia Moreno-Miranda
The Amazon sailfin catfish Pterygoplichthys pardalis (Castelnau, 1855) is an introduced species in the Palizada River (Southeastern Mexico). Since 2008, we performed investigations on the populations of this species. In June and November 2012, and in February and March 2013, we captured ten specimens, which displayed kyphosis and scoliosis of the spinal column, diagnosed by high resolution X-ray. This is the first report of axial skeleton deformities in the genus Pterygoplichthys.

A new species of the genus Congochromis (Cichlidae) from the Central Congo basin

Anton Lamboj
Congochromis robustus, a new cichlid species, is described from the Central Congo basin. It differs from its congeners by its larger size and a combination of morphological characters: greater cheek depth, greater snout length, smaller eye orbit diameter and smaller postorbital length.

Record of Carcharhinus falciformis (Bibron in Müller & Henle, 1839), in Italian waters (Ligurian Sea, Northwestern Mediterranean)

Fulvio Garibaldi & Lydia Orsi Relini
A specimen of the silky shark, Carcharhinus falciformis (Bibron in Müller {&} Henle, 1839), male, 209 cm TL, was caught off Sanremo, in the Ligurian Sea (Northwestern Mediterranean) as commercial by catch of the swordfish longline fishery. It represents the first documented record in Italian waters and the most northerly record of the species in the Mediterranean.

Diversity of the Ancistrini (Siluriformes: Loricariidae) from the Guianas: the Panaque group, a molecular appraisal with descriptions of new species

Sonia Fisch-Muller, Juan I. Montoya-Burgos, Pierre-Yves Le Bail & Raphaël Covain
DNA barcoding represents a reliable and powerful way to discriminate and identify species using a standardized region of the mt COI gene. However, a correct identification requires two factors: differentiation and assignment. When one component is lacking, the barcode approach usually fails. To circumvent such problem, we developed a dual approach using a nuclear marker as complementary identifier. A first step consisted in characterizing the first intron of the F-RTN4 gene. This intron was found...

Composition et variations spatio-temporelles du régime alimentaire de Trachurus trachurus (Carangidae) de la côte atlantique marocaine

Fatima Wahbi, François Le Loc'h, Amina Berreho, Aissa Benazzouz, Abdelouahed Ben Mhmed & Ahmed Errhif
Le régime alimentaire du chinchard d’europe, Trachurus trachurus (Linnaeus, 1758), a été étudié au sud de la côte atlantique marocaine, entre cap blanc et cap boujdour (21°00’N-26°30’N). L’échantillonnage a été réalisé durant les saisons chaude (juin-juillet-août) et froide (novembre-décembre) en 2007 et 2008. L’analyse du contenu stomacal de 456 individus a montré que le régime alimentaire de T. trachurus est diversifié, composé essentiellement de crustacés pélagiques qui représentent ses proies préférentielles. une analyse en composante...

On the record of alfonsino Beryx splendens (Berycidae) in Sardinian seas (central-western Mediterranean)

Maria C. Follesa, Antonello Mulas, Cristina Porcu & Angelo Cau
An adult male specimen of Beryx splendens was caught off Cape Carbonara (SE Sardinia, Italy) in November 2009. This capture represents the second documented record in Italian waters. Morphometrics and biological data of the collected fish are described.

Comparative cytogenetic studies of the Nototheniidae (Teleostei: Acanthomorpha) from the Indian (Kerguelen-Heard Plateau) and Atlantic (South Georgia, South Sandwich, Falkland/Malvinas, Bouvet Islands) sectors of the Southern Ocean

Marta Tomaszkiewicz, Mélyne Hautecoeur, Jean-Pierre Coutanceau, Céline Bonillo, Agnès Dettaï, Federico Mazzei, Laura Ghigliotti, Eva Pisano, Arnaud Couloux, Bruno Chanet, Guillaume Lecointre, H. William Detrich III, Guy Duhamel & Catherine Ozouf-Costaz
Comparative cytogenetics is a powerful tool that can be combined with molecular phylogenetics and morphological systematics to infer the evolutionary relationships among species. In this report we describe the karyotypes (including 5S and 28S ribosomal RNA gene positions) of ten species from three understudied genera of the family Nototheniidae (suborder Notothenioidei); five of the karyotypes (species underlined) are reported for the first time: Gobionotothen marionensis (Günther, 1880), G. acuta (Günther, 1880), G. gibberifrons (Lönnberg, 1905),...

Length-weight relationships of ten teleost fish species from seagrass meadows at the Canary Islands (North-eastern Atlantic)

Fernando Espino, Raül Triay-Portella, José A. González, Ricardo Haroun & Fernando Tuya
This paper reports on the length-weight relationships of ten teleost fish species inhabiting seagrass meadows constituted by the marine angiosperm Cymodocea nodosa from the Canary Islands (North-eastern Atlantic): Bothus podas, Xyrichtys novacula, Mullus surmuletus, Sparisoma cretense, Diplodus annularis, Pagellus erythrinus, Spondyliosoma cantharus, Syngnathus typhle, Canthigaster capistrata and Sphoeroides marmoratus. A total of 1,396 individuals were collected using a seine net. These equations represent the first biological data for C. capistrata and S. marmoratus throughout their...

Range extension of the Atlantic herring Clupea harengus (Clupeiformes: Clupeidae) southern part of the Northeast Atlantic Ocean

Rafael Bañón, Antonio Punzón, David Barros-García & Alejandro De Carlos
Five specimens of the Atlantic herring Clupea harengus were caught in the north of Spain (Galicia and Asturias waters) during the last years. The identification of two preserved specimens was done considering morphometric and meristic characters and was confirmed by DNA barcoding. These catches represent the first records for Galicia and Asturias marine waters and they are the southernmost records from the Northeastern Atlantic Ocean. The occurrence of this species in the southern part of...

Revision of the Middle Badenian fish otoliths from the Carpathian Foredeep in Moravia (Middle Miocene, Czech Republic)

Rostislav Brzobohatý & Dirk Nolf
Otoliths from the Middle Miocene of the Moravian Carpathian Foredeep revealed the presence of 84 nominal species of bony fishes, as well as 22 taxa identified in open nomenclature only. Two species, Ijimaia rara n. sp. and Coryphaenoides scrupus n. sp., are described as new. The otolith assemblage is quantitatively dominated by myctophids, but stomiiforms and macrourids are significantly represented as well. Bregmacerotids, gadids and trachichthyids are common, but only represented by a single species...

On the association of carangid juveniles, Alepes djedaba, with the jellyfish Rhizostoma pulmo

M. Levent Artüz & Sezginer Tuncer
We investigated the fish-jellyfish association on 99 specimens of jellyfishes, collected from seven different sampling sites during summer 2015. The collected jellyfish were Rhizostoma pulmo (Macri, 1778) and the fish juveniles associated with these hosts were identified as Alepes djedaba (Forsskål, 1775). The carangid A. djedaba is closely associated with many species of large scyphozoan jellyfishes. This study provides basic information about the spatial distribution of this fish-jellyfish association, based on observations in the west...

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