Conservation Threats and Future Prospects for the Freshwater Fishes of Ecuador: a Hotspot of Neotropical Fish Diversity

The fish fauna occurring in Brazilian small streams comprises 36 families of teleost freshwater fishes. The systematics and phylogenetic knowledge about this fauna greatly expanded during the last two decades, but is still very heterogeneous. For some taxonomic groups there are taxonomic identification keys and well-documented phylogenetic hypotheses, while other groups are mostly comprised by poorly known species. The increase in the knowledge of Neotropical fish diversity was associated with the significant growth of hypotheses about their evolution and contributed to the understanding of the phylogenetic history of fish comunities and their structure in small streams.

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Molecular assessment of native fish diversity in UNESCO heritage site, Tasik Raban, using DNA barcoding

ARPHA Conference Abstracts ◽

10.3897/aca.4.e65039 ◽

2021 ◽

Vol 4 ◽

Author(s):

Ramizah Abdull Rahman ◽

Nurul Fizatul Nabilah Osman ◽

Adibah Abu Bakar ◽

Syazwan Saidin ◽

Intan Faraha Abdul Ghani ◽

...

Keyword(s):

Native Species ◽

Dna Barcode ◽

Diversity Management ◽

Freshwater Fishes ◽

Animal Protein ◽

Fish Diversity ◽

Freshwater Species ◽

Heritage Site ◽

Online Databases ◽

The World

Freshwater species are the most threatened group to be assessed to date by the IUCN. Freshwater fish has enormous importance as animal protein supplies for human, and it is estimated that 6% of the world annual animal protein supplies come from freshwater fishes. Barcoding projects have been initiated all over the world and the field is constantly growing. In Malaysia however, the field has not been deeply investigated and not many barcoding projects have been undertaken especially for freshwater fishes. The aim of our study is to support the progress of DNA barcode project, especially for inland reservoirs like Tasik Raban, Perak. A Standard methodology using Cytochrome c oxidase subunit 1 (COI) marker was developed to ensure native fishes are barcoded taxonomically and molecularly and ready to be accessed through online databases. Such public references can help increase awareness on local fish diversity management. Information on taxonomy and molecular characterization can be used to plan further conservation programmed especially for depleted, unrecognized, and cryptic native species.

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Conservation Status, Threats and Future Prospects for the Survival of Freshwater Fishes of the Western Cape Province, South Africa

Management and Ecology of River Fisheries ◽

10.1002/9780470696026.ch29 ◽

2008 ◽

pp. 418-427 ◽

Cited By ~ 3

Author(s):

N.D. Impson ◽

K.C.D. Hamman

Keyword(s):

South Africa ◽

Conservation Status ◽

Freshwater Fishes ◽

Western Cape ◽

Future Prospects ◽

Western Cape Province

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A new species of Loricaria (Siluriformes: Loricariidae) from the Turiaçu River basin, Eastern Amazon region, Brazil

Zootaxa ◽

10.11646/zootaxa.4915.3.10 ◽

2021 ◽

Vol 4915 (3) ◽

pp. 424-434

Author(s):

ANANDA CAROLINA S. SARAIVA ◽

JOÃO MARCELO S. ABREU ◽

FELIPE POLIVANOV OTTONI ◽

NIVALDO MAGALHÃES PIORSKI

Keyword(s):

New Species ◽

Freshwater Fish ◽

River Basin ◽

Standard Length ◽

Freshwater Fishes ◽

Amazon Region ◽

Fish Diversity ◽

Pectoral Girdle ◽

Median Region ◽

A New Species

A new species of Loricaria is herein described from the Turiaçu River basin, Eastern Amazon region, Maranhão state, Brazil, within the Maranhão Hydrological Unit (MHU). Loricaria turi differs from its congeners mainly by the following combination of characters: abdominal plate development confined to the posterior median region, pectoral girdle mostly naked, with cluster of plates near pectoral fin bases; large eyes (minimum orbital diameter 16.2–20.7% of HL and maximum orbital diameter 19.8–24.0% of HL), 214.4 mm of maximum standard length, and large basicaudal plate (16.6–29.2% of HL). The description of this new species strengthens the hypothesis that the Maranhão Hydrological Unit (MHU) is a possible area of endemism for freshwater fishes and contributes to the knowledge of the freshwater fish diversity and composition of the region.

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Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns

Zootaxa ◽

10.11646/zootaxa.4567.3.5 ◽

2019 ◽

Vol 4567 (3) ◽

pp. 515 ◽

Cited By ~ 1

Author(s):

CASEY KEAT CHUAN NG ◽

TEOW YEONG LIM ◽

AMIRRUDIN B. AHMAD ◽

MD ZAIN KHAIRONIZAM

Keyword(s):

Freshwater Fish ◽

Fish Species ◽

Field Data ◽

Freshwater Fishes ◽

Fish Diversity

This study investigates the published literature and incorporates our field data from 1997 to September 2018 to generate an inventory report of primary freshwater fishes for Perak State in Malaysia. We critically examined and enumerated 186 species from 2 classes, 16 orders, 43 families and 114 genera in 57 localities. A total of 173 fish species (91.4%) are native to Perak and 17 species (8.6%) are non-native. The provisional checklist presented herein is conservative and excludes doubtful inventory records that lack synthesis and traceability. We encountered seven taxonomic discrepancies and we also could not confidently identify eight species. These are explicitly discussed to inform future workers.

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Checklist of freshwater fishes from Loreto, Peru

Revista Peruana de Biología ◽

10.15381/rpb.v28iespecial.21911 ◽

2021 ◽

Vol 28 (especial) ◽

pp. e21911

Author(s):

Vanessa Meza-Vargas ◽

Dario R. Faustino-Fuster ◽

Junior Chuctaya ◽

Max Hidalgo ◽

Hernán Ortega Torres

Keyword(s):

Environmental Management ◽

Decision Making ◽

Freshwater Fishes ◽

Fish Diversity ◽

Extensive Review ◽

Management Actions ◽

Extensive Region ◽

Scientific Collections ◽

Iucn Criteria ◽

Occurrence Records

This study presents an extensive review of published and unpublished occurrence records of fish species in the Loreto department. Located in the northeast of the country, Loreto is the most geographically extensive region in the Peruvian territory. Despite the increase in fish collections in Loreto in recent years, the ichthyofauna of this department needs to be more documented. Based on a database of scientific collections and bibliographic information, an updated checklist of the freshwater fishes from Loreto is presented. The results reveal a rich and diversified ichthyofauna, with 873 species distributed in 331 genera, 50 families and 15 orders. The main groups are Characiformes (42.6%), Siluriformes (34.8%), Gymnotiformes (8.6%) and Cichliformes (7.4%). Part of the ichthyofauna has restricted distribution for Loreto (4.7%). In addition, 9.0% of species from Loreto are used in fisheries. Meanwhile, 219 species (25%) were categorized according to the IUCN criteria where only six species (0.7%) are currently considered threatened species (CR, EN or VU). The results presented in this work indicate that this department needs more studies to know the biodiversity of fish, likewise, the information presented constitutes a contribution to the knowledge of fish diversity that would support environmental management actions and decision-making aimed at conserving one of the most diverse departments of Peru.

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Negative impacts of mining on Neotropical freshwater fishes

Neotropical Ichthyology ◽

10.1590/1982-0224-2021-0001 ◽

2021 ◽

Vol 19 (3) ◽

Author(s):

Valter M. Azevedo-Santos ◽

Marlene S. Arcifa ◽

Marcelo F. G. Brito ◽

Angelo A. Agostinho ◽

Robert M. Hughes ◽

...

Keyword(s):

Crude Oil ◽

Road Construction ◽

Freshwater Fishes ◽

Food Chains ◽

Fish Diversity ◽

Mining Activities ◽

Iron Copper ◽

Structure Of Communities ◽

The Subject ◽

Negative Impacts

Abstract Mining activities have significantly affected the Neotropical freshwater ichthyofauna, the most diverse in the world. However, no study has systematized knowledge on the subject. In this review, we assembled information on the main impacts of mining of crude oil, gold, iron, copper, and bauxite on aquatic ecosystems, emphasizing Neotropical freshwater fishes. The information obtained shows that mining activities generate several different disturbances, mainly via input of crude oil, metals and other pollutants, erosion and siltation, deforestation, and road construction. Mining has resulted in direct and indirect losses of fish diversity in several Neotropical waterbodies. The negative impacts on the ichthyofauna may change the structure of communities, compromise entire food chains, and erode ecosystem services provided by freshwater fishes. Particularly noteworthy is that mining activities (legal and illegal) are widespread in the Neotropics, and often located within or near protected areas. Actions to prevent and mitigate impacts, such as inspection, monitoring, management, and restoration plans, have been cursory or absent. In addition, there is strong political pressure to expand mining; if – or when – this happens, it will increase the potential of the activity to further diminish the diversity of Neotropical freshwater fishes.

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Human impacts and the loss of Neotropical freshwater fish diversity

Neotropical Ichthyology ◽

10.1590/1982-0224-2021-0134 ◽

2021 ◽

Vol 19 (3) ◽

Author(s):

Fernando M. Pelicice ◽

Andréa Bialetzki ◽

Priscila Camelier ◽

Fernando R. Carvalho ◽

Emili García-Berthou ◽

...

Keyword(s):

Freshwater Fish ◽

Human Impacts ◽

Land Use Changes ◽

Freshwater Fishes ◽

River Regulation ◽

Neotropical Region ◽

Ecosystem Functions ◽

Fish Diversity ◽

Special Focus ◽

Biodiversity Crisis

Abstract Neotropical Ichthyology promotes the Special Issue (SI) “Human impacts and the loss of Neotropical freshwater fish diversity” with the purpose of publishing relevant scientific articles on the current biodiversity crisis and the loss of Neotropical freshwater fishes in the Anthropocene. The SI is composed of 22 publications, being two review articles and 20 original articles. A total of 107 researchers contributed to these papers, involving 44 institutions based in Brazil and six other countries. Published articles investigated main anthropic activities and their impacts on fish diversity, with special focus on river regulation, mining, land use changes, aquaculture, and fisheries. Studies provided evidence about the loss of fish diversity in the Neotropics, including fish kill events, demographic changes, contamination, changes in assemblage structure, loss of taxonomic and functional diversity, besides the degradation of ecosystem functions and services, and the lack of effective protection and conservation. Studies were conducted in rivers, streams, lakes, and reservoirs from different Neotropical systems. The studies published in this SI represent a relevant sample of the current worrisome situation of freshwater fishes in the Neotropical region and call for urgent revision in environmental policies, management and conservation initiatives, and socioeconomic priorities.

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INVESTIGATION ON BIODIVERSITY AND CONSERVATION OF FRESHWATER FISHES IN INDONESIA

Indonesian Aquaculture Journal ◽

10.15578/iaj.7.2.2012.171-181 ◽

2012 ◽

Vol 7 (2) ◽

pp. 171

Author(s):

Sudarto Sudarto ◽

Emmanuel Paradis

Keyword(s):

Production Systems ◽

Global Analysis ◽

Freshwater Fishes ◽

Freshwater Ecosystems ◽

High Rate ◽

Fish Diversity ◽

Multi Scale ◽

Adverse Impacts ◽

Distribution Of Fish ◽

Aquaculture Production

Indonesia is one of the richest regions in the world in terms of biodiversity. However, recent evidence has shown that tropical forests destruction has maintained at a high rate over the last few years in this country. At the same time, living resources in Indonesian freshwater ecosystems are important: this country ranks at number seven in terms of production of inland capture fisheries with 323,150 tonnes in 2008. Freshwater fishes represent 42% of the total estimated ichthyofauna, concentrated in 0.01% of the total water covered environment. This environment is closer to human activities, making it critically vulnerable to adverse impacts. Furthermore, there has been some recent debates on the general sustainability of fisheries and aquaculture production systems. This research was focused on initiating a multi-scale study of fish biodiversity in freshwater environments. Two specific actions have been started. A review based on the analyses of the existing scientific literature and of databases on fish taxonomy and distributions. In parallel to this work, a global analysis of the distribution of fish diversity in Indonesia was undertaken. This work aims at identifying the major features of this resource as well as its current and future threats.

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