<abstract xmlns="http://www.w3.org/1999/xhtml">

Bilateral asymmetry is presumed to reveal the developmental variability of the fish in polluted aquatic environments. In these habitats, high-level asymmetry develops, and these fish expend more energy to balance their growth than fish that are not under an impact. A total of 121 specimens of <italic>Pampus argenteus</italic> were collected from Khor Abdulla located in the northwest part of the Arabian Gulf. The asymmetry of two otolith parameters of the marine fish species <italic>Pampus argenteus</italic>, length and width, was calculated. The results demonstrated that the level of asymmetry was highest for otolith width. The level of asymmetry in both otolith parameters was lowest in fish length ranging between 70-100 mm and the highest in fish ranging between 281-310 mm.
</abstract>

Department of Fresh Water Biology and Fisheries

Bilateral Asymmetry in Otolith Size of <italic>Pampus argenteus</italic> (Osteichthyes: Stromatidae) from Iraqi Marine Waters

<abstract xmlns="http://www.w3.org/1999/xhtml">

Diversity, abundance and distribution pattern of the fish fauna are important aspects that need to be considered in order to frame the conservation and management strategies in any water body. To assess the composition, diversity and relative abundance of the fish fauna in the Manasbal Lake of Kashmir, the present study was carried out for two years (March 2018 - February 2020). A total of 22522 fish specimens were netted out during the sampling period, and the relative abundance and various diversity indices were used to assess the overall diversity of the inhabiting fish fauna. A total of 7 species belonging to two families, Cyprinidae and Poeciliidae, were reported, of which the family Cyprinidae was dominant in the catch. The relative abundance and diversity of the fish fauna showed spatio-temporal variation wherein <italic>Pethia conchonius</italic> was most abundant during spring and winter, while <italic>Gambusia holbrooki</italic> was most abundant during summer and autumn. <italic>Cyprinus carpio</italic> was found to be abundant during all the seasons at Site II and Site III as compared to native cyprinids, <italic>Schizothorax niger</italic> and <italic>S. curvifrons</italic>. The current study also indicated a good fish diversity in the lake which varies on spatio-temporal scales, showing maximum diversity during winter (Hʹ =1.498) and minimum diversity during summer (Hʹ = 1.247), while Site II showed maximum diversity (Hʹ =1.369) and Site I showed minimum diversity (Hʹ =1.085). Overall lake possesses good fish diversity that could be a great source of income for the local populace provided the fish assemblages are sustainably managed.
</abstract>

Diversity and Relative Abundance of Ichthyofauna in Manasbal Lake of the Kashmir Himalayas, India

<abstract xmlns="http://www.w3.org/1999/xhtml">

The population structure and genetic variability of North African catfish <italic>Clarias gariepinus</italic> (Burchell 1822) were investigated using partial mitochondrial DNA cytochrome b region sequences. Fifty-four (54) samples were investigated from three geographically isolated rivers in Nigeria. The analysis of 53 haplotypes revealed greater haplotype diversity (0.99930) and nucleotide diversity (p) (0.07270). According to an analysis of molecular variance (AMOVA), the genetic diversity of North African catfish within populations is significantly higher than the genetic diversity across populations. The FST scores (0.75000, 0.94792 and 0.95699) indicated that North African catfish populations in three Nigerian freshwater bodies had a strong genetic structure. The phylogenetic reconstruction of unique haplotypes revealed the placement of a haplotype (Ogbese) linked by others from all three groups with a point mutation ranging from 1 to 24 nucleotides. North African catfish populations in the Asejire and Ureje are genetically diverse, as evidenced by a high level of haplotype diversity of 1.0000, low nucleotide diversity spanning from 0.05101 to 0.07889, and high FST values (within-population genetic variation). The common haplotypes between some populations and mixes of haplotypes from different populations within the same genetic cluster demonstrate that the population genetic structure is not distinct.
</abstract>

Genetic Differentiation and Molecular Phylogenetics of North African Catfish from Three Distinct Waterbodies

<abstract xmlns="http://www.w3.org/1999/xhtml">

Fish availability in the coastal landing center highlights the assumption of stocks in the marine fishing zone of the ocean. This study, therefore, aimed to analyze the availability of marine fishes in the Bangladesh Fisheries Development Corporation (BFDC) landing center, Cox’s Bazar, Bangladesh between January 2021 and May 2021. A total of 54 species were recorded, of which 42 were marine fishes, 7 were shellfishes and 5 were large fishes. The dominant orders were Perciformes (56%), Scombriformes (17%) and Clupeiformes (10%). More than 56% of the total marine fishes were classified as <italic>Least Concern</italic>, nearly 10% were categorized as <italic>Near Threatened</italic> and 2% were marked <italic>Vulnerable</italic>. The dominant orders of shellfish were Portunidae (43%), followed by Penaidae (29%), Loligonidae (14%) and Octopopidae (14%). Shrimp <italic>Penaeous monodon</italic> had the highest consumer demand, whereas consumer demand for non-conventional shellfish was comparatively low. Most of the shellfish were categorized as <italic>Least Concern</italic>. Among large fishes, the wider availability of sharks (five species) and rays (two species) was observed in the winter and monsoon season, although the consumer demand for those large fishes was low. The <italic>Vulnerable</italic> sharks and rays were <italic>Sphyma zygaena</italic> and <italic>Mobula birostris</italic>. This study elucidates the present scenario of marine fishes in the BFDC fish landing center, Cox’s Bazar, Bangladesh.
</abstract>

Availability of Marine Fishes in Cox’s Bazar, Bangladesh: A Case Study on the BFDC Landing Center

<abstract xmlns="http://www.w3.org/1999/xhtml">

This study presents data on regular health monitoring of fish in the Aquatika – Freshwater Aquarium Karlovac between October 2016 and December 2019. The Aquatika Aquarium houses 85 different freshwater fish species, 31 of which are endemic in Croatia. The study included an evaluation of the results of the aquarium health monitoring programme. It determined the most common fish diseases in the aquarium (at the species and individual levels) and determined whether endemic or non-endemic freshwater fish are more susceptible to diseases and disorders. The regular health monitoring programme revealed different diseases and disorders in endemic and non-endemic fish. During the monitoring, 3104 fish specimens were analysed. The most frequent disease was ichthyophthiriasis which occurred at a similar frequency in endemic and non-endemic fish species. The results proved to be valuable for the evaluation of risks and measures to minimise the risk of the introduction and spread of pathogens in the aquarium. Preventive fish medicine is extremely important for effective aquarium management. A comprehensive health monitoring programme, including quarantine systems, control of feed and environmental parameters, along with regular fish observation, are critical for the early detection of fish diseases.
</abstract>

Health Management of Endemic and Non-Endemic Fish in the Aquatika – Freshwater Aquarium Karlovac

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 The Croatian Journal of Fisheries was established in 1938 and today possesses a long-term tradition of publishing papers that deal with both freshwater and marine fisheries. Areas covered by the Journal include ichthyology, aquaculture, ecology and diseases of fish and other aquatic organisms, problems of open waters and other topics related to the fisheries field.  Prior to publication, articles pass through rigorous review by senior scientists from around the world. The Journal features articles that reflect original research, interpretative content and subject matter of interest to the fisheries profession. The journal owner Faculty of Agriculture (FAZ) University of Zagreb, founded in 1919, is the leading higher education and scientific institution in the field of agriculture and related sciences in the Republic of Croatia, occupying an important position within the country's educational, scientific and research system. The FAZ organization is based on 28 departments with 417 members of the staff and 6 experimental stations.  The Croatian Journal of Fisheries (CJF) is committed to real and immediate open access for academic work. All of the CJF’s articles are free to access immediately from the date of publication. There are no author charges (APCs) prior to publication, and no charge for any reader to download articles and reviews for their own scholarly use. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, without asking prior permission from the publisher or the author (see Copyright). This is in accordance with the BOAI definition of open access. To facilitate this the CJF depends upon the financial underwriting provided by the Croatian Ministry of Science, Education and Sport, Faculty of Agriculture, Croatian Chamber of Economy, journal subscribers, the goodwill of its editorial team and the continuing support of its network of peer reviewers.  Copyright:  Commercial distribution of journal articles in any form (printed or digital) is strictly forbidden. All published content in CJF is licensed under Creative commons Attribution-NoDerivs 3.0 licence. Authors of articles published in CJF retain the copyright of their articles and they are free to reproduce and disseminate their work under the terms of the Creative commons Attribution which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.  Why subscribe and read:  CJF is an English-language (additional abstract in Croatian language) peer-reviewed quarterly journal, publishing original research papers from the wide area of fisheries. It contains editorials, original scientific papers, preliminary and short communications, review papers, professional papers and supplements to fishing profession authored by researchers from all over the world, who appreciate fast, fair and constructive peer review provided by experts in the field of our profile. CJF reviewers have prompt and rapid response to the authors according to the schedule. At the time of paper submission, author will get unique paper ID and can check their paper status online. Also, CJF has simple and standard Template which can ease the submission procedure.  Why submit:  By submitting manuscripts in Croatian Journal of Fisheries authors can rely on fast peer review process and thorough editing by sector experts. CJF changed the Editorial Board to the Associate Editors system. In this way papers are more rigorously reviewed and the reviewing process is much faster. Consequently, the published papers are of much better quality.  Rejection rate:   30%   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

Croatian Journal of Fisheries

Volume 80 (2022): Issue 3 (September 2022)

Bilateral Asymmetry in Otolith Size of Pampus argenteus (Osteichthyes: Stromatidae) from Iraqi Marine Waters

Diversity and Relative Abundance of Ichthyofauna in Manasbal Lake of the Kashmir Himalayas, India

Genetic Differentiation and Molecular Phylogenetics of North African Catfish from Three Distinct Waterbodies

Availability of Marine Fishes in Cox’s Bazar, Bangladesh: A Case Study on the BFDC Landing Center

Health Management of Endemic and Non-Endemic Fish in the Aquatika – Freshwater Aquarium Karlovac

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