Catalogue of morphological scale deformities from 13 species of freshwater fish from the Kaniv Reservoir (Dnieper), Ukraine

2018 ◽  
Vol 69 (10) ◽  
pp. 1569
Author(s):  
Laith A. Jawad ◽  
Joacim Näslund ◽  
Jitka Rutkayová ◽  
Jana Nebesářová ◽  
Karel Beneš ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Fish Health ◽  
Number Of Species ◽  
Morphological Anomalies ◽  
Future Work

Among the morphological anomalies that have been reported in fish so far, abnormalities in scale shape and structure have been described from a limited number of species worldwide. The aim of the present study was to extend this knowledge by identifying and describing such scale abnormalities in freshwater fish from the Kaniv Reservoir, Ukraine. Scale deformities were common in most of the species investigated (Cyprinidae, 10 spp.; Percidae, 2 spp.; Esocidae, 1 sp.), with some differences in the number of cases among them. A wide variety of scale deformities was found, classified into two major categories, slight and severe. In all, 211 abnormal scales (172 slight and 39 severe deformities) were observed and described. The scale deformities described herein could help direct future work on the relationships between the condition of the environment and fish health.

Scale deformity descriptions for 23 species of fish, from various geographical areas and habitats

2018 ◽  
Vol 69 (2) ◽  
pp. 313
Author(s):  
Laith A. Jawad ◽  
Ana L. Ibáñez ◽  
Zahra Sadighzadeh ◽  
Joacim Näslund ◽  
Erhan Ünlü
Keyword(s):  
Fish Species ◽  
Aquatic Environments ◽  
Fish Scale ◽  
Environmental Condition ◽  
Fish Health ◽  
Morphological Abnormalities ◽  
Number Of Species ◽  
Wide Range ◽  
Different Shapes ◽  
Future Work

A renewed interest in fish scale anomalies prompted the present study, wherein we document a wide range of scale morphological abnormalities, including deformities in shape and structure, of a large number of species. In the present study, 63 cases of deformities were reported from 23 fish species collected from five countries. The abnormalities observed are discussed within the framework of contaminated aquatic environments, with a goal of recognising the cause of abnormality. Deformed scales exhibited different shapes, showing both slight (n=52 cases) and severe (n=9 cases) abnormalities. The scale deformations described in the present study should help direct future work on the relationships between environmental condition and fish health.

Preliminary evidence of spawning phenologies of freshwater fish in a wet–dry tropical river: the importance of both wet and dry seasons

2020 ◽  
Vol 71 (2) ◽  
pp. 202 ◽  
Author(s):  
A. J. King ◽  
C. Doidge ◽  
D. Buckle ◽  
K. J. Tyler
Keyword(s):  
Freshwater Fish ◽  
Early Life ◽  
Sampling Methods ◽  
Life Stages ◽  
Young Fish ◽  
Early Life Stages ◽  
Wet Season ◽  
Number Of Species ◽  
Dry Tropics ◽  
Fish Spawning

Wet–dry tropical rivers are characterised by highly predictable, yet highly variable, seasonal flow regimes. The wet season is often regarded as an important period of ecosystem productivity, dispersal and connectivity, and also for freshwater-fish spawning and recruitment. However, few studies have examined fish spawning across hydrological seasons in these rivers. We conducted a pilot study to determine (1) the temporal occurrence (and hence spawning period), and (2) the suitability of standard sampling methods of young fish in the Daly River, Northern Territory, Australia. Fish spawned throughout the year, with spawning phenologies varying substantially among species. The highest diversity and abundance of young fish occurred during the wet season, although early life stages of a high number of species were also present in the dry-season and transition periods. A high number of species spawned all year round, whereas other species had very discrete spawning periods. Three of the four sampling methods tested were successful in catching early life stages and should be employed in future studies. The present study highlighted that all hydrological seasons in the wet–dry tropics are important for fish spawning, and has important implications for future research on the drivers of spawning patterns, and for predicting the effects of flow modifications on freshwater fishes of the wet–dry tropics.

scholarly journals An inventory of Ichthyofauna of the Pindaré River drainage, Mearim River basin, Northeastern Brazil

2020 ◽  
Vol 20 (4) ◽  
Author(s):  
Erick C. Guimarães ◽  
Pâmella S. de Brito ◽  
Cléverson S. Gonçalves ◽  
Felipe P. Ottoni
Keyword(s):  
Freshwater Fish ◽  
River Basin ◽  
Native Species ◽  
Fish Fauna ◽  
Taxonomic Status ◽  
Northeastern Brazil ◽  
Neotropical Fish ◽  
River Drainage ◽  
Number Of Species ◽  
Species Lists

Abstract: In the present work, we conducted an extensive long-lasting inventory of the fishes, using different collection methodologies, covering almost the entire Pindaré River drainage, one of the principal tributaries of the Mearim River basin, an area included in the Amazônia Legal region, northeastern Brazil. We reported 101 species, just three of them being non-native, demonstrating that the composition of this studied fish community is majority composed of native species. We found a predominance of species of the orders Characiformes and Siluriformes, corroborating the pattern usually found for the Neotropical fish fauna. Similar to other studies, this inventory was mainly dominated by small characids, representing 21% of the species herein recorded. When comparing the present survey with other species lists published for this region (including the States of Maranhão and Piaui), we can conclude that the freshwater fish fauna of the State of Maranhão is probably still underestimated. We reported 41 more species, and one more species than Soares (2005, 2013) and Abreu et al. (2019) recorded for the entire Mearim River basin, respectively. We believe, however, that the number of species presented by Abreu et al. (2019) is overestimated. We compared our results with all other freshwater fish species inventories performed for the hydrological units Maranhão and Parnaíba sensu Hubbert & Renno (2006). With these comparisons, we concluded that our results evidenced that a high effort was put in the inventory here presented. The two works including more species recorded from coastal river basins of the hydrological units Maranhão and Parnaíba were the works published by Ramos et al. (2014) for the Parnaíba River basin, one of the main and larger river basin of Brazil, and the compiled data published by Castro & Dourado (2011) for the Mearim, Pindaré, Pericumã, and upper Turiaçu River drainages, including 146 and 109 species, respectively. Our survey recorded only 45 less species than Ramos et al. (2014), and eight less species than Castro & Dourado (2011). However, it is essential to emphasize that the number of species presented by Castro & Dourado (2011) is probably overestimated since they did not update and check the taxonomic status of the species of their compiled data. In several cases, they considered more than one name for the same species.

scholarly journals Do Freshwater Fish Eat Microplastics? A Review with a Focus on Effects on Fish Health and Predictive Traits of MPs Ingestion

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2214
Author(s):  
Silvia Galafassi ◽  
Claudia Campanale ◽  
Carmine Massarelli ◽  
Vito Felice Uricchio ◽  
Pietro Volta
Keyword(s):  
Freshwater Fish ◽  
Strong Evidence ◽  
Laboratory Experiments ◽  
Current Knowledge ◽  
Emerging Pollutants ◽  
Natural Environments ◽  
Fish Health ◽  
Surrounding Water ◽  
Toxicological Effects ◽  
Different Tissues

Microplastics (MPs) have received increasing attention in the last decade and are now considered among the most concerning emerging pollutants in natural environments. Here, the current knowledge on microplastic ingestion by wild freshwater fish is reviewed with a focus on the identification of possible factors leading to the ingestion of MPs and the consequences on fish health. Within the literature, 257 species of freshwater fishes from 32 countries have been documented to ingest MPs. MPs ingestion was found to increase with rising level of urbanization, although a direct correlation with MPs concentration in the surrounding water has not been identified. MPs ingestion was detected in all the published articles, with MPs presence in more than 50% of the specimens analyzed in one study out of two. Together with the digestive tract, MPs were also found in the gills, and there is evidence that MPs can translocate to different tissues of the organism. Strong evidence, therefore, exists that MPs may represent a serious risk for ecosystems, and are a direct danger for human health. Moreover, toxicological effects have also been highlighted in wild catches, demonstrating the importance of this problem and suggesting the need for laboratory experiments more representative of the environmental situation.

scholarly journals Freshwater fishes of the Parque Nacional dos Lençóis Maranhenses and adjacent areas

2019 ◽  
Vol 19 (3) ◽  
Author(s):  
Pâmella Silva de Brito ◽  
Erick Cristofore Guimarães ◽  
Beldo Rywllon Abreu Ferreira ◽  
Felipe Polivanov Ottoni ◽  
Nivaldo Magalhães Piorski
Keyword(s):  
Freshwater Fish ◽  
Introduced Species ◽  
River Basin ◽  
New Records ◽  
Freshwater Fishes ◽  
Species Level ◽  
Amazon River ◽  
Amazon River Basin ◽  
Number Of Species ◽  
Freshwater Environments

Abstract: We present here an embracing freshwater fish inventory of the Parque Nacional dos Lençóis Maranhenses and adjacent areas, reporting 49 fish species, 33 of which were identified accurately at the species level, representing ten orders and 25 fish families that range from obligate freshwater to estuarine organisms. This number of species is much larger than two previous studies for the park, each reporting just 12 and 33 fishes occurring on freshwater environments. Among the 49 freshwater species recorded in this study, 14 are new records for the Parque Nacional dos Lençóis Maranhenses, and just one corresponds to an introduced species. Some of the 14 new records in the Parque Nacional dos Lençóis Maranhenses, cited above, as well as some of the 16 species which we are not able to identify accurately at the species level, could include undescribed species, but more study is necessary before sorting out which species are truly undescribed, and which are already described ones. The orders reported by this survey which comprise the highest percentage of species richness, excluding introduced species, were: Characiformes, Cichliformes and Siluriformes, in the same ranking position, and Gymnotiformes, as expected for Neotropical freshwater surveys. The families with the highest number of species, excluding non-native species, were: Characidae, followed by Cichlidae, and Loricariidae. Out of the 33 species herein identified accurately at the species level, five of them are species typically found in brackish water environments, and when occurring on freshwater environments, are restricted mainly to estuaries, or, occasionally, the lower portions of the rivers. Thus, we will not address them in our biogeographical comments. From the remaining 28 species, eight did not occur in the Amazon River basin, six of them being endemic to the Maranhão-Piauí ecoregion. The remaining species herein reported also have their distribution recorded for the Amazon River basin, which shows the great influence of the Amazon basin. In the last two decades efforts to inventory the freshwater fish fauna and to taxonomically solve some groups occurring on the Maranhão state have been made. However the knowledge regarding the composition of the Maranhão freshwater fishes is still insufficient and underestimated, with several groups still lacking adequate taxonomic and systematic resolution, and with many gaps of knowledge, something that is not appropriate for our current picture of "biodiversity crisis". As well as, the other Brazilian protected areas, the PNLM fails to preserve its freshwater environment properly, since it includes only fragments of the major river systems of the area, not including and conserving the hole river drainages, mainly excluding their headwaters. Thus, its water bodies are exposed to typical human impacts.

scholarly journals Freshwater fish richness baseline from the São Francisco Interbasin Water Transfer Project in the Brazilian Semiarid

2020 ◽  
Vol 18 (4) ◽  
Author(s):  
Márcio J. Silva ◽  
Telton P. A. Ramos ◽  
Fernando R. Carvalho ◽  
Marcelo F. G. Brito ◽  
Robson T. C. Ramos ◽  
...  
Keyword(s):  
Species Richness ◽  
Freshwater Fish ◽  
Native Species ◽  
Water Transfer ◽  
Knowledge Gap ◽  
Number Of Species ◽  
Hydrological Changes ◽  
Brazilian Semiarid ◽  
Interbasin Water Transfer

Abstract Among Neotropical freshwater ecoregions, the Mid-Northeastern Caatinga (MNCE) is a fish knowledge gap. Its temporary drainages are receptors of the São Francisco interbasin water transfer project (SFR-IWT) in the Brazilian semiarid. We provide a comprehensive baseline of fish richness of the five SFR-IWT basins. Species richness, shared, endemic, threatened and non-native species were obtained using sampling, ichthyologic collections, literature and online repositories (306 localities). In total 121, species were recorded, 111 of them native, and 16 (14.41%) listed for all basins. Higher richness of native species (78, 70.27%) was recorded in the São Francisco lower-middle stretch (SFRE), including 23 endemic, 61 (54.95%) in MNCE basins (13 endemic), and 28 (25.23%) shared between both ecoregions. In the MNCE, 50 species were recorded in Jaguaribe (JAG), 39 in Piranhas-Açu, 36 in Paraíba do Norte, and 32 in Apodi-Mossoró (APO). The number of species shared between the SFRE and each receptor basin varied from 24 (23.08%, JAG) to 20 (22.22%, APO). JAG contains 81.97% of the receptor basins’ species. Its higher richness and endemism deserve special attention regarding the ongoing hydrological changes. This study will help detect possible modifications in the ichthyofauna of the main MNCE drainages.

scholarly journals Rectoris longibarbus Zhu, Zhang & Lan, a new record species, from Vietnam

2017 ◽  
Vol 33 (1S) ◽  
Author(s):  
Nguyen Van Giang ◽  
Nguyen Huu Duc ◽  
Nguyen Kiem Son
Keyword(s):  
Freshwater Fish ◽  
New Record ◽  
Fish Fauna ◽  
Morphological Characteristics ◽  
Key To Species ◽  
Number Of Species ◽  
New Record Species ◽  
Freshwater Fish Fauna ◽  
Morphological Differences

A species of the genus Rectoris Lin, 1935 newly recorded from Northeast of Vietnam is Rectoris longibarbus. This species were collected in Bang Giang river, territory of Cao Bang province and Ky Cung river, territory of Lang Son province. The genus Rectoris Lin comprises 5 species worldwide, mainly distributed in Asia. In Vietnam, up to date there were 2 species belonging to the genus Rectoris recorded. Based on the samples is collected of Rectoris, as well as domestics and foreign publiccations, we found one species, Rectoris longibarbus Zhu, Zhang & Lan as a new record for freshwater fish fauna of Vietnam. The newly recorded species has the morphological differences with the already known species of Vietnam, thus the total number of species of this genus is three. In this paper some detailed description of morphological characteristics of Rectoris longibarbus is gived. A key to species of the genus inVietnam is also provided.  

scholarly journals Diversity and longitudinal distribution of freshwater fish in Klawing River, Central Java, Indonesia

2018 ◽  
Vol 19 (1) ◽  
pp. 85-92
Author(s):  
SUHESTRI SURYANINGSIH ◽  
SRI SUKMANINGRUM ◽  
SORTA BASAR IDA SIMANJUNTAK ◽  
KUSBIYANTO KUSBIYANTO
Keyword(s):  
Cluster Analysis ◽  
Freshwater Fish ◽  
Fish Species ◽  
The Other ◽  
Longitudinal Distribution ◽  
Number Of Species ◽  
Central Java ◽  
Key Factor ◽  
Single Cluster ◽  
Distribution Of Fish

Suryaningsih S, Sukmaningrum S, Simanjuntak SBI, Kusbiyanto. 2018. Diversity and longitudinal distribution of freshwater fish in Klawing River, Central Java, Indonesia. Biodiversitas 19: 85-92. The aims of this study were to evaluate the diversity and longitudinal distribution of fish in Klawing River, Purbalingga (Central Java). The survey was performed using a clustered randomsampling technique. The river was divided into upstream, midstream and downstream regions. Species diversity was measured as the number of species, and the longitudinal distribution was assessed by determining the fish species present in each of the three regions. Eighteen fish species of eleven families were identified in the Klawing River: Cyprinidae, Bagridae, Mastacembelidae, Anabantidae, Cichlidae, Channidae, Eleotrididae, Beleontinidae, Osphronemidae, Poecilidae, and Siluridae. Cyprinidae exhibited the highest number of species (six), followed by Bagridae and Cichlidae (two species each). The other families were represented by one species each. A single cluster analysis showed that the upstream population had a similarity of 78% and 50% with the midstream and downstream populations, respectively. Species and family diversities were higher in the midstream populations than in the upstream and downstream populations. This longitudinal distribution may be due to differences in environmental conditions and suggests that management of the land surrounding the Klawing River is a key factor in the conservation of freshwater fish.

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