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Three specimens of silver-cheeked toadfish, Lagocephalus sceleratus (Gmelin, 1789), were caught on eastern coasts of Algeria during the winter of 2013–2014. This is the first record of this invasive species from Algeria, providing further evidence of its occurrence along north-African coasts and confirming its entry into the Western basin of the Mediterranean. The human-health implications of this...
A single specimen of the Guillet’s goby, Lebetus guilleti (Le Danois, 1913), was collected and photographed during a gobiid fish survey by scuba diving from the Sea of Marmara. The fish measured 12.1 mm (standard length). This finding constitutes the first record of L. guilleti from the Sea of Marmara and the fourth from the Mediterranean Sea.
Background. The goliath grouper, Epinephelus itajara (Lichtenstein, 1822), is the largest Atlantic grouper. It has been the first marine fish subjected to a fishing moratorium in Brazil (since 2002). The aim of this study was to investigate basic biological aspects, particularly the diet and reproduction of this endangered species. We believe that our results, together with information already available...
Freshwater fish biogeography can provide insight into past connectivity of river systems. Here we report the first discovery of the large-bodied cyprinid Acapoeta tanganicae (Boulenger, 1900) inside the Lake Rukwa catchment. Previously this species was thought to be endemic to Lake Tanganyika and immediately proximate sections of connected rivers. This shared distribution supports a scenario of direct...
Background. Intra cohort cannibalism is one of the main factors that affects the growth and survival of cultured fishes, especially in the larval and juvenile stages. Cannibalism is mainly influenced by extrinsic factors, but intrinsic effects cannot be excluded. As regards the family Percidae, all-female rearing can be advantageous for the fish growth, but does this solution have some impact on cannibalism?...
A specimen of porcupine fish was collected by a fisherman at Terceira Island, Azores (north-eastern Atlantic), and identified as the pelagic porcupinefish, Diodon eydouxii Brisout de Barneville, 1846, a species recently recorded for the first time from the Azores. This record, together with an examination of the first reported specimen, allowed us to compare the external morphology with Pacific specimens...
Background. The small red scorpionfish, Scorpaena notata Rafinesque, 1810, appears as a bycatch of Portuguese fisheries. Bycatch species are likely to suffer the same declines as commercial species with which they co-occur but information on those species for Portuguese waters does not exist. In order to increase the knowledge for the Portuguese continental-shelf waters several aspects of the species...
A little known species of snake eel, Ophichthus lithinus (Jordan et Richardson, 1908), is reported for the first time from the east coast of India, Bay of Bengal based on two specimens 632 and 720 mm in total length, collected respectively at Digha, West Bengal and Kalpakam, Tamil Nadu, India. This is the first attempt to provide a detailed description of the species from the Indian Ocean. The presently...
Background. The authors suggest that skin injury, particularly scale loss, during the capture may be one reason of the escape mortality. However, skin and fin damages are not responsible for all of the observed mortalities occurring during the fish passage through the mesh of the trawl codend. Nevertheless, physical damages may expose escapees to secondary infections from bacteria and fungi. This...
Background. Marine protected areas (MPAs) with partial fishing restrictions are socially more acceptable, but their ecological effectiveness has largely not been assessed. The effects of establishing partial reserves on a target species, forkbeard, Phycis phycis (Linnaeus, 1766), were assessed in MPAs in the Mediterranean: Cap de Creus (Spain) and Lastovo (Croatia). Materials and methods. In this...
Background. The bogue, Boops boops (Linnaeus, 1758); large-eye dentex, Dentex macrophthalmus (Bloch, 1791); common two-banded seabream, Diplodus vulgaris (Geoffroy Saint-Hilaire, 1817); and axillary seabream, Pagellus acarne (Risso, 1827) are four commercially important sparid species which are distributed in the Mediterranean. Although they are very common in the Mediterranean, information regarding;...
Pomatoschistus marmoratus (Risso, 1810) is a small demersal fish and one of the dominant species inhabiting shallow waters of the Mediterranean. Information, however, on their feeding habits are still scarce. In this study, the stomach contents of P. marmoratus were investigated in order to determine feeding habits according to seasons and sizes. The fish were collected monthly from 3 stations between...
Background. Bastard grunt, Pomadasys incisus (Bowdich, 1825), is reported as a ell-established species in the Mediterranean Sea. Although bastard grunt has rapidly expanded its area of distribution in the Mediterranean, there is no information about its age and growth. The aim of this study was to provide data about growth, condition, and first sexual maturity of the species in order to contribute...
Background. The yellowfin snook, Centropomus robalito Jordan et Gilbert, 1881, is one of the most important species in southwestern Gulf of California fisheries. It is caught in estuarine systems by coastal fishermen and as bycatch on the continental platform, by the industrial shrimp fishery. Dietary analysis are important to understanding the trophic interactions and the position of species within...
Background. Biological invasions represent a threat to the ecological stability of the ecosystem. Two lionfish species, the red lionfish and the devil firefish—both tropical marine predators native to the Indo–Pacific—were introduced to the Atlantic Ocean. However, only one—the red lionfish, Pterois volitans (Linnaeus, 1758)—has reached the level of an invasive species so far. It is crucial to learn...
Background. Due to their location between the continent and the sea and their shallow depths, lagoons play an important ecological role in coastal ecosystems by providing a selection of habitat types for many species, functioning as nursery areas and feeding grounds for marine opportunistic fishes. The fish fauna of the Nador Lagoon (NE Morocco), as in the majority of southern Mediterranean lagoons,...
Background. Salmonid spermatozoa are characterised by a very short time of activity in the water, therefore sudden water pollution in the form of increased salinity on the spawning grounds may have a negative effect on the sperm motility parameters, thus affecting the subsequent egg fertilisation and, consequently, the number of hatched individuals of the species. The aim of this study was to determine...
Captures of 11 spinetail devil rays, Mobula japanica (Müller et Henle, 1841), from the northern coast of Tunisian (central Mediterranean) are reported in the present paper. Of these 11 specimens, five specimens were described. These captures constitute the first records of the species in the Tunisian waters, but also in the Mediterranean Sea, extending its distribution. This unusual occurrence of...
A specimen of Champsodon vorax Günther, 1867, of 113 mm SL, was caught on 6 September 2014 with a bottom trawl from the entrance of the Bay of Izmir, north-eastern Aegean Sea at a depth of 65 m. The presently reported study constitutes the first record for the Aegean Sea but also the fourth record for the Mediterranean Sea. The specimen described in this paper is the largest individual reported to...
Background. Five species of Ponticola have hitherto been recognized among freshwater gobies in the Ponto–Caspian basin. In 2014 a number of specimens representing this genus were collected in northern Iran. The detailed morphological and karyological study of those gobies collected revealed significant differences between them and their known congeners. The aim of this study was to describe these...
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