551 Works

First record of five fish species from Réunion Island observed during the inventory of the Marine Natural Zones of Interest for Ecology, Flora and Fauna (ZNIEFF)

Mathieu Pinault, Julien Wickel, Thierry Mulochau, Jean-Benoît Nicet & Ronald Fricke
This paper reports the first record of five species of marine fishes from Reunion Island, identified during biodiversity surveys carried out within the framework of the Marine Natural Zones of Interest for Ecology, Flora and Fauna (ZNIEFF). These species: Fusigobius inframaculatus(Randall, 1994), Fusigobius neophytus(Günther, 1877), Samariscus triocellatusWoods, 1960, Trichonotus marleyi(Smith, 1936) and Zapogon evermanni(Jordan and Snyder, 1904) were all photographed within non-reef habitats, despite the sampling of many reef and non-reef habitats of the island...

The relationship between Sardinella aurita landings and the environmental factors in Moroccan waters (21°-26°N)

Ayoub Baali, Najib Charouki, Khalid Manchih, Ismail Bessa, Ikram Elqoraychy, Mouna Elqendouci, Khadija Amenzoui & Ahmed Yahyaoui
The objective of this study is to assess the effects of environmental variations on the abundance of the round sardinella (Sardinella aurita, Valenciennes, 1847) in Moroccan waters (21°-26°N) using generalized additive models. The monthly variability of Sardinella aurita abundance in the south of Morocco is investigated using sea surface temperature (SST), upwelling index (UI) and chlorophyll-a (Chl-a) concentration from Global ARMOR3D L4 product, ESA Ocean Colour CCI and AquaMODIS satellite data between 2009 and 2016....

Annotated checklist for fishes of the Main Nile Basin in the Sudan and Egypt based on recent specimen records (2006-2015)

Dirk Neumann, Henriette Obermaier & Timo Moritz
The results of several short ichthyological surveys on the Nile Basin in Sudan between 2006 and 2015 are presented. In attempting to represent major type localities and recently observed variability, we complement known field records with records of a reference collection of recent fish bones collected during the 1980s and records of aberrant cichlids populations in Egypt observed at El Fayum and in lakes of the Nile Delta. From 133 native species in the Republic...

New and rare records of fishes from the White Nile in the Republic of the Sudan

Timo Moritz, Zuheir Nour El Dayem, Mohammed Abakar Abdallah & Dirk Neumann
During two brief collecting trips on the White Nile in the area of Kosti and Al Jabalayn in April 2016 and March 2018, 82 fish species from 48 genera and 23 families were recorded. During the 2016 survey, major parts of the type series of the just recently described Labeo latebra Moritz & Neumann, 2017 were collected together with an apparently undescribed Haplochromis species from Kosti. Additionally, a marked variance in syntopic Sarotherodon galilaeus (Linnaeus,...

Evidence for a close phylogenetic relationship between the teleost orders Tetraodontiformes and Lophiiformes based on an analysis of soft anatomy

Bruno Chanet, Claude Guintard, Eric Betti, Cyril Gallut, Agnès Dettaï & Guillaume Lecointre
Recent phylogenetic studies based on comparisons of DNA sequences have shown that Lophiiformes (anglerfishes) and Tetraodontiformes (puffers, triggerfishes and sunfishes) were closely related, whereas no morpho-anatomical work has assessed this point. Dissections of 80 fresh specimens belonging to 49 species of 29 acanthomorph families, coupled with analyses of the literature indicate the existence of shared soft anatomy characters between Lophiiformes and Tetraodontiformes. Among acanthomorphs, anglerfishes, puffers, ocean sunfish and triggerfishes are peculiar in possessing: i)...

Three new records of Gobiidae from Malta with morphology, colouration and identification of the smallest known juveniles of two small gobiid speciesof two small gobiid species

Marcelo Kovačić, Juan Jose Bonello & Julian Evans
Individuals of small juvenile gobies, some of them just 10 mm long, were collected during a study on infralittoral cobble bed fauna around the Maltese Islands between July and September 2011. These represent the first records of three gobiid species for Malta, including Gobius couchi Miller & El Tawil, 1974 and the smallest known juveniles of Millerigobius macrocephalus (Kolombatović, 1891) and Zebrus zebrus (Risso, 1827). Morphology and colouration, including diagnostic features and photographs, are provided...

Âge, croissance et reproduction du sar tambour Diplodus cervinus cervinus (Sparidae) des côtes de l’Est algérien

Farid Derbal & M. Hichem Kara
L’âge, la croissance et la reproduction du sar tambour, Diplodus cervinus cervinus (Lowe, 1838), ont été étudiés sur les côtes de l’Est de l’Algérie, à partir de 190 spécimens. En utilisant la méthode scalimétrique, nous avons pu identifier 13 groupes d’âge dans la population échantillonnée (9,8 < Lt < 52,7 cm ; 19 < Mt < 2100 g). Les paramètres de la croissance sont Lt∞ = 68,83 cm, K = 0,105 et t0 = –0,747,...

The family Bramidae (Perciformes) from the Canary Islands (Northeastern Atlantic Ocean), with three new records

Gustavo González-Lorenzo, José F. González-Jiménez, Alberto Brito & José A. González
An account of the species of the family Bramidae (Teleostei, Perciformes) from the Canary Islands is given. Pterycombus brama, Taractes asper and Taractes rubescens are recorded for the first time in the Canaries, which brings to six the number of bramid species recorded in the area. Available data on distribution, habitat, and morphometry of the studied species are presented.

Early development of the freshwater goby Orsinogobius croaticus endemic to Croatia and Bosnia-Herzegovina

Zanella Davor, Zoran Marčić, Marko Ćaleta, Ivana Buj, Snježana Zrnčić, Sven Horvatić & Perica Mustafić
Early development of the freshwater goby Orsinogobius croaticus (Mrakovčić, Kerovec, Mišetić & Schneider, 1996) endemic to Croatia and Bosnia-Herzegovina, reared under laboratory conditions, is described for the first time. Eggs were pear shaped, 1.4 × 1 mm in size. Hatching occurred 9 to 10 days after spawning, and larvae had a mean TL of 4.27 mm, with the caudal fin and all three pairs of otoliths developed and clearly visible at hatching. Hatched larvae showed...

Fish community assemblages in relation to environmental variables in the Lefini River, middle Congo River basin (Republic of Congo)

Armel Ibala Zamba, Emmanuel Vreven, Victor Mamonekene & Jos Snoeks
This study, one of the few ecological investigations of fishes recently performed in Africa, was undertaken in the Lefini River basin, a large right bank affluent of the Congo River in the Republic of Congo. The study area comprised 12 ecological stations, spread along 103 km of the river. Each station was sampled eight times over a two-year period, with fishing following standardized methods utilizing five monofilament gill nets of 10, 12, 15, 20 and...

Hard tissues in fish evolution: history and current issues

Hans-Peter Schultze
A short survey of the distribution of scale characters in osteichthyans is mapped onto recently published cladograms of gnathostomes. The recently confirmed relationship of polypterids with scanilepids places their early ontogenetic features as advanced features within palaeonisciform actinopterygians. The pore-canal system (which seems to hold nerves for sensing water pressure changes) of cosmoid scales appears as a singular feature of dipnoans and rhipidistians without connection to the rich vascular system in basal osteichthyans. Elasmoid scales...

Length-weight, length-length and a proposed empirical standard weight equations for the Italian endemic cyprinid species Sarmarutilus rubilio

Daniela Giannetto, Giuseppe Maio, Laura Pompei, Stefano Porcellotti & Massimo Lorenzoni
Length and weight data of 21,040 specimens of the Italian endemic species Sarmarutilus rubilio (Bianco & Ketmayer, 2014) were collected throughout the area of distribution of the species and used to cal- culate total length-weight (TL-W), standard length-total length (SL-TL), fork length-total length (FL-TL), and standard weight (Ws) equations. The SL-TL equation was TL = 1.153 SL + 4.121; the FL-TL equation was TL = 1.037 FL + 0.288. The log-transformed TL-W equation was: log10W...

Allozymic variability in European anchovy Engraulis encrasicolus ( L .) along the Moroccan coasts

Khalil Chahdi Ouazzani, Touria Benazzou & Malika Chlaida
Allozyme variation was used to investigate for the first time the genetic structure of European anchovies, Engraulis encrasicolus (Linnaeus, 1758), along the Moroccan coasts. A total of 420 individuals were collected at 11 sites during the anchovy spawning period of 2012. Eleven loci were tested, among them only LDH* [E.C:1.1.27] and PGM * [E.C:5.4.2.1] were polymorphic. Statistical analysis results showed no significant differentiation between samples (overall FST = 0.0077, p = 0.13). Genotypic proportions were...

Otolith shape differences between Micropogonias manni and M. altipinnis (Sciaenidae)

Lina-Maria Duque-Vélez, Philippe Béarez & Raphaël Cornette
Sagitta morphology is much used in sciaenid systematics, as well as in archaeological, paleontological and ecological studies. Although morphometric characteristics of sagitta (length, height, thickness, weight,…) are useful to discriminate some marine and freshwater species, they are not fully conclusive in the case of Micropogonias altipinnis and M. manni. In order to give new elements for characterizing and discriminating these species we propose here to apply the geometric morphometry technique to sagittae of these species...

The detection of weakly developed plicidentine in teleost teeth using 3D tomography

Damien Germain, Jorge Mondéjar-Fernández & François J. Meunier
The detection of weakly developed plicidentine in ground sections can be difficult, because these structures cannot always be resolved by analysing two-dimensional thin-sections. X-ray tomography followed by 3D virtual modelling allows the non-destructive study of the spatial morphology of these important structures. Here, we illustrate dentine folds in the pulp cavity of the teeth in three teleost fishes, Arapaima gigas (Osteoglossiformes), Hoplias aimara (Characiformes) and Lophius piscatorius (Lophiiformes), and add data from a lepisosteid, Lepisosteus...

Fishing at Qal’at al-Bahrain, archipelago of Bahrain, from the Early Dilmun (2200 BC) to the Middle Islamic period (13-16th centuries AD)

Justine Vorenger
Excavations have taken place at the site of Qal’at al-Bahrain in Bahrain, Arabo-Persian Gulf, since the 1950’s. They have revealed significant architectural remains and a rich assortment of material, including ceramics, metal objects, figurative representations, inscriptions, seals, and botanical and faunal remains, which include a large number of fish bones. Its exceptional stratigraphy, which extends from the Early Dilmun (ca. 2200 BC) to the Middle Islamic period (13-16th centuries AD), enables us to study and...

New insights into the chromosomal differentiation patterns among cichlids from Africa and Madagascar

Catherine Ozouf-Costaz, Jean-Pierre Coutanceau, Céline Bonillo, Hervé Mercot, Yves Fermon & Chantal Guidi-Rontani
To increase understanding of the chromosomal diversity among cichlid species, karyotypes of 19 species of Cichlidae belonging to 15 genera (Paratilapia polleni, Chromidotilapia guntheri guntheri, Hemichromis fasciatus, Steatocranus irvinei, Stomatepia pindu, Altolamprologus compressiceps, Julidochromis transcriptus, Neolamprologus tetracanthus, N. brevis, Gnathochromis permaxillaris, Eretmodus cyanostictus, Astatoreochromis alluaudi, Haplochromis callipterus, H. paludinosus, Nimbochromis livingstonii, N. polystigma, Pseudocrenilabrus multicolor victoriae, P. philander and Ctenochromis horei) were investigated for the first time. In spite of the variation in the karyotypes...

Premier signalement de Pseudanthias bicolor (Serranidae) sur différents habitats artificiels à La Réunion

Mathieu Pinault, Julien Wickel, David Guyomard, Ronald Fricke & Jean-Pascal Quod
Malgré le nombre élevé d’études réalisées sur les peuplements ichtyologiques des zones récifales de l’île de la réunion au cours des quarante dernières années, l’anthias bicolore Pseudanthias bicolor (ran -dall, 1979), précédemment recensé à Maurice et aux Maldives dans l’océan indien, n’a jamais été observé sur les récifs coralliens de l’île. Deux spécimens de cette espèce ont été photographiés récemment sur des habitats artificiels lors de suivis scientifiques en plongée sous-marine. La présente étude, fondée...

Observations on the diet of adult Oblada melanura (Sparidae) in the Strait of Sicily (central Mediterranean)

Luca Castriota, Valentina Esposito, Manuela Falautano, Pietro Battaglia & Franco Andaloro
The diet of adult saddled seabream Oblada melanura, collected mainly from artificial reefs off Sciacca (Strait of Sicily), was studied. A total of 60 specimens were caught by bottom longline and gillnet from March to October 2007 and their stomachs preserved. Food items were identified, counted and weighed. Frequency of occurrence (%F), abundance (%N) and weight (%W) percentages were used to calculate the index of relative importance (IRI) for each prey category. The analysis of...

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.

Potentially unsustainable fisheries of a critically-endangered pelagic shark species: the case of the blue shark (Prionace glauca) in the Western Mediterranean Sea

Sebastián Biton-Porsmoguer & Josep Lloret
The blue shark (Prionace glauca) is a pelagic, highly migratory shark commonly considered to be a by-catch species of small-scale pelagic longline fisheries. It has been listed by the IUCN as “critically endangered” in the Mediterranean Sea since 2016, but no measure has been taken so far to control its exploitation there. This study analyses the trends in this fishery over recent years in Spanish Mediterranean waters. The results show that blue sharks are now...

Emmelichthys marisrubri, a new rover from the southern Red Sea (Teleostei: Emmelichthyidae)

Ronald Fricke, Daniel Golani & Brenda Appelbaum-Golani
Emmelichthys marisrubri sp. nov. is described from three specimens, which were trawled off Eritrea in the southern Red Sea. The species is characterised by the spinous and soft-rayed portions of dorsal fin separated by a gap containing four short isolated spines, which are protruding over the dorsal surface of the body; depth of body 16.5-20.2% SL; lateral-line scales 80-83; dorsal-fin spines 12-13; dorsal-fin soft rays 8; pectoral-fin rays 18-20, total gill rakers 26-31. A revised...

A new species of Sicyopus (Gobiidae) from Java and Bali

Philippe Keith, Renny K. Hadiaty, Frédéric Busson & Nicolas Hubert
Sicyopus rubicundus n. sp., a sicydiine goby, is described from specimens collected in streams of Java and Bali (Indonesia). It differs from other species of this amphidromous genus by a combination of characters including a first dorsal fin with five spines in both sexes, a second dorsal fin with one spine and nine segmented rays, an anal fin with one spine and nine segmented rays, and a distinctive body colour in male.

Three new species of Lentipes from Indonesia (Gobiidae)

Philippe Keith, Renny K. Hadiaty, Nicolas Hubert, Frédéric Busson & Clara Lord
Three new species of Lentipes (L. argenteus, L. ikeae and L. mekonggaensis), freshwater gobies, are described from streams of Sumatra, Java, Bali and Sulawesi (Indonesia). They differ from other species of the genus by a combination of characters including an urogenital papilla lacking lateral lobes and retractable into a sheath-like groove, the number of pectoral fin rays, the number of scales, tricuspid teeth in the upper jaw, and a specific body colour in males.

A genetic method to differentiate Petromyzon marinus ammocoetes from those of the paired species Lampetra fluviatilis and L . planeri

Maria C. Urdaci, Catherine Taverny, Anne-Marie Elie & Pierre Élie
Petromyzon marinus and Lampetra sp. are protected by international conventions (Bern, 1979; Habitats directive, 1992). To estimate the abundance, and thus the precariousness of each population, it is advisable to distinguish the larvae of each species, because they may use the same environments in rivers. However, these larvae were indistinguishable on morphological criteria (oral disk, pigmentation, myomeres,…). We used a molecular method for discriminating between P. marinus and Lampetra sp. A 560 bp DNA fragment...

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