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Ichthyology

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Ichthyology is the branch of zoology that focuses on the study of fish, encompassing their biology, behavior, ecology, taxonomy, and conservation. It examines both freshwater and marine species, contributing to our understanding of aquatic ecosystems and the evolutionary relationships among fish.
lightbulbAbout this topic
Ichthyology is the branch of zoology that focuses on the study of fish, encompassing their biology, behavior, ecology, taxonomy, and conservation. It examines both freshwater and marine species, contributing to our understanding of aquatic ecosystems and the evolutionary relationships among fish.

Key research themes

1. How do environmental stressors like flow intermittence and salinization influence life-history traits and population dynamics of freshwater fish in arid and semi-arid regions?

This theme investigates the adaptive life-history strategies and population responses of freshwater ichthyofauna to challenging abiotic factors such as flow cessation, habitat fragmentation, and increasing salinity in intermittent river systems prevalent in arid and semi-arid regions, particularly focusing on African and Mediterranean basins. Understanding these adaptations is critical for conservation biology and management of endemic and relict species facing climate variability and anthropogenic pressures.

Key finding: Compared populations of Oreochromis aureus from a permanent saline river and an intermittent highly salinized stream showed marked differences: fish in intermittent habitats were smaller, lighter, and in poorer body... Read more
Key finding: The endemic Draa barbel exhibited decreased body condition and growth performance with increasing salinity and flow intermittency. Fish from saline intermittent reaches matured at smaller sizes and younger ages, had faster... Read more
Key finding: Review documented 132 fish species from Sudanese inland waters with highest richness in the permanent White Nile and lower diversity in seasonal rivers, underscoring differing fish assemblages' adaptations to hydrological... Read more

2. What are the current methods and challenges in assessing population dynamics and sustainable fishery management of native and economically important freshwater fish species?

This theme addresses quantitative assessment techniques for population parameters such as growth rates, mortality, recruitment, and exploitation levels of freshwater fish species to inform sustainable fishery management. It encompasses case studies focusing on data collection methods, use of growth models (e.g. von Bertalanffy), mortality estimation, and exploitation rate evaluation, particularly for species of conservation concern or economic value in Southeast Asia and North America.

Key finding: Using length-frequency data, growth parameters (L∞=194.25mm, K=0.25), mortality rates (total Z=0.84, natural M=0.45, fishing F=0.40), and recruitment patterns were estimated for Anabas testudineus, revealing an exploitation... Read more
Key finding: Independently corroborating previous findings, this study calculated growth performance, length-weight relationships with negative allometric growth (b<3), and mortality metrics of climbing perch populations, confirming the... Read more
Key finding: Field surveys and molecular analyses identified Bridle Shiner populations confined to the greater James River basin, with habitat specificity marked by association with submerged aquatic vegetation. Due to patchy... Read more

3. How can ichnological methodologies, including 3D modeling and trace fossil analysis, advance our understanding of vertebrate and invertebrate behavior in both modern and fossil contexts?

This theme explores state-of-the-art ichnological methods focusing on the creation and application of statistically generated morphotypes via 3D modeling ('mediotypes' and 'stat-tracks'), and the study of trace fossils (ichnology) for reconstructing ancient organism behavior and paleoecology. It emphasizes the role of high-resolution data, morphometric variability analysis, and paleontological trace interpretation that informs evolutionary, ecological, and stratigraphic studies.

Key finding: Introduces novel concepts 'stat-tracks' (statistically derived 3D mean/median tracks) and 'mediotypes' (median tracks from type specimens) to analyze morphological variability in vertebrate trace fossils. Demonstrates these... Read more
Key finding: Summarizes multi-disciplinary advances presented at the ICCI-2015, emphasizing novel methodologies like 3D photogrammetry, ichnotaxonomic classification challenges, paleoenvironmental reconstructions, and conservation... Read more

All papers in Ichthyology

Temperature can have a significant effect on the conductivity and TDS (total dissolved solids) of water. In general, as the temperature of water increases, its conductivity also increases. This is because at higher temperatures, water... more
Temperature can have a significant effect on the conductivity and TDS (total dissolved solids) of water. In general, as the temperature of water increases, its conductivity also increases. This is because at higher temperatures, water... more
In preparation for the revised new edition of the 1997 book “The Fishes of the Galapagos Islands” by Jack Stein Grove and Robert J. Lavenberg, to be published next year by the EPCA, the East Pacific Corridor Alliance Foundation... more
In Colombia basic information of natural history exists only for a small fraction of the freshwater fish species. The objective of this work was to determine the food habits of ten fish species of the Casanare piedmont. The quantification... more
Introducción La cuenca del río Orinoco ha sido una de las más intensamente muestreadas en los últimos años como producto de inventarios realizados en los principales tributarios que drenan su área tanto en Colombia como en Venezuela. El... more
Excavating Maglemosian sites presents unique challenges due to the fragility of the archaeological record, the scarcity of material remains, and modern environmental impacts. This study examines the Øresø Mølle excavation in Åmosen,... more
Author contributions JSH led the writing. All authors read and approved the final manuscript.
Resumen: El caño Manamo es uno de los tres principales distributarios de agua del delta del río Orinoco y es el límite más septentrional, receptor de otros importantes ríos del oriente, donde destacan el Tigre y el Uracoa. Se... more
Artykuł stanowi przedstawienie dwóch różnych praktyk opracowywania przedstawień owadów na przełomie XVI i XVII w. To studium prawie 40 rysunków z Albumów Anselma de Boodta (Rijksmuseum) porównujące artystyczne, iluzjonistyczne miniatury... more
This study was the first effort to illustrate the length-weight relationship (LWR), condition factor and sex ratio of an economically important Snow trout, Schizothorax plagiostomus collected from Neelum and Jhelum Rivers, Muzaffarabad,... more
The Talabre geoglyphs carry a millennia-old mem- ory that transcends their figures. They are remnants of the ancient trans-desert caravanners and have been silent witnesses to all subsequent history up to the present day. In this work, we... more
Ichthyofaunal biodiversity has enormous economic and aesthetic value and is largely responsible for maintaining and supporting overall environmental health. The aim of the study was to explore the fish fauna of Dinara Pond in Shivpuri... more
The impact of a small hydropower plant (SHP) on aquatic communities (benthic algae, macroinvertebrates and ichthyofauna) and water quality was investigated in the Panjica River (Serbia). The field research was conducted at three... more
Two new species of Microglanis are described from tributaries of upper-middle rio Araguaia, States of Mato Grosso and Goiás, Brazil. Microglanis oliveirai differs from its congeners by the short supraoccipital process not reaching the... more
Two new species of Microglanis are described from tributaries of upper-middle rio Araguaia, States of Mato Grosso and Goiás, Brazil. Microglanis oliveirai differs from its congeners by the short supraoccipital process not reaching the... more
The Forcados River Estuary, found in the Niger Delta region of Nigeria, is home to numerous economically important fish species, including Clupeidae (sardines and herrings), Sciaenidae (croakers), and Mugilidae (mullets). However, it has... more
Induced spawning of C. batrachus was conducted at different Ovaprim dose and latency period combinations to observe the deformed larvae among the hatchlings. For the purpose, four doses of Ovaprim (0.5, 1.0, 1.5 and 2.0 ml/kg body weight)... more
Geophagus parnaibae sp. n. is described from the drainage of the rio Parnaíba in the states of Piauí and Maranhão (northeastern Brazil). It can be distinguished from all other described Geophagus species by the following combination of... more
2 Warthestr. 53a, D-12051 Berlin Abstract. Geophagus parnaibae sp. n. is described from the drainage of the rio Parnaiba in the states of Piaui and Maranhao (northeastern Brazil). It can be distinguished from all other described Geophagus... more
Entre octubre de 1998 y agosto de 1999 se realizaron cinco cruceros a bordo del B/I Ancón, a lo largo del talud superior del Caribe colombiano desde Punta Estrella (Guajira), límites con Venezuela, hasta Cabo Tiburón (Chocó), límites con... more
Otolith morphology serves as a powerful tool for species discrimination and ecological studies, yet traditional morphometric approaches often overlook functionally significant contour complexity. Here, we apply fractal geometry to analyse... more
The article describes the history and present state of the collection of fish of Middle Asia which is currently kept at the Department of Ichthyology and Hydrobiology and Department of Vertebrate Zoology of Saint Petersburg State... more
Based on newly collected material, we present a comparative redescription of two histerid beetles: Erebidus vlasovi (Reichardt, 1941) and the poorly known E. reichardti (Tishechkin & Lackner, 2012). The study includes a diagnostic key... more
Freshwater ichthyofauna play a vital role in biodiversity, nutrition, and rural livelihoods in tribaldominated regions of eastern India. The present study documents fish diversity and market dynamics across Santhal Pargana, Jharkhand,... more
Наведені дані щодо екстенсивності та інтенсивності інвазії дощових черв'яків личинками метастронгіл у господарствах з виробництва свинини зон Полісся та Лісостепу України, неблагополучних щодо метастронгільозу. Установлено, що найбільші... more
Con el fin de obtener un mejor conocimiento de la ictiofauna en la parte superior del talud continental del Caribe colombiano se realizó la expedición INVEMAR MACROFA U N A I, en la cual se efectuaron 80 arrastres durante cinco cruceros... more
Mediante censos visuales se registraron 198 especies de peces asociados a arrecifes coralinos en cinco áreas del Caribe colombiano evaluadas a través del "Sistema Nacional de Monitoreo de A r r e c i f e s Coralinos en Colombia" (SIMAC)... more
Fresh water ponds (POKHARS) plays a significant role in human life, it also have a major impact in determination of nutritive and health condition of human beings because human being considered as fish producing and consuming unit. Fishes... more
Based on the data of trawl surveys, changes in the structure of species composition and flatfish abundance (Pleuronectidae) in waters off Primorye are shown in the period embracing over 20 years (1983 to 2004). In waters off Primorye, 14... more
The catch of three specimens of Atka mackerel Pleurogrammus monopterygius (Pallas, 1810) in Peter the Great Bay and off the coasts of Sakhalin (the Sea of Japan) is reported. The sites of catches are indicated, and the values of plastic... more
The rudd, Scardinius erythrophthalmus (Linnaeus,1758) is a common freshwater fish species, which widely spread in Europe and middle Asia. S. erythrophthalmus was first reported Lake Uluabat in Turkey by Berg in 1921. This species does not... more
With more than 24,000 extant species, the Actinopterygii is the most diverse group of vertebrates. This astonishing diversity represents not only an underexploited resource for research focused on these fishes but also a source of... more
India is well-known for its abundant and varied fish species, a result of its great variety of aquatic environments. The earliest reference to fishes in Indian writing is found in Vedas and Puranas. The taxonomic knowledge on the fishes... more
The general morphological shape of plant-resembling fish and plant parts were compared using a geometric morphometrics approach. Three plant-mimetic fish species,Lobotes surinamensis(Lobotidae),Platax orbicularis(Ephippidae)... more
Can Ecosystem-Based Deep-Sea Fishing Be Sustained? Can Ecosystem-Based Deep-Sea Fishing Be Sustained? 5 1. In this report, "deep sea" is acknowledged to include depths greater than 200 m, but the fish species of concern have adult... more
Limnology has greatly influenced the field of freshwater fisheries science, particularly fisheries biology. However, both fields became increasingly disconnected during the 20 th century, when major research traditions within limnology... more
The sleeper shark, Somniosus pacificus, ranges from Chile (Crovetto et al., 1992) through southern California (Phillips,1953), British Columbia to the Gulf of Alaska (Bright,1959), the Bering Sea (Wilimovsky,1954), and Japan (Tanaka et... more
In order to evaluate the present distribution patterns of salmonids and their potential effects on native fish, we sampled 11 large lakes and 105 streams, encompassing a total of 13 main hydrographic watersheds of southern Chile (39 o to... more
Assam is a home to a numerous number of rivers, floodplain wetlands, ponds and fishery resources. Fisheries provide livelihood to a large section of the rural population and income generation of this region. The present study is conducted... more
The Manzanares River basin, located in Sucre State, Venezuela, is experiencing significant water quality deterioration due to heavy metal contamination. This study aimed to determine the concentrations (mg·L⁻¹), mass loads (ton·day⁻¹),... more
the NOAA Technical Memorandum series to issue informal scientific and technical publications when complete formal review and editorial processing are not appropriate or feasible. Documents within this series reflect sound professional... more
The FLORIDA MUSEUM OF NATURAL HISTORY is Florida's state museum of natural history, dedicated to understanding, preserving, and interpreting biological diversity and cultural heritage. The BULLETIN OF THE FLORIDA MUSEUM OF NATURAL HISTORY... more
A comprehensive study of fish diversity, relative and absolute biomass of registered species in Zeta River, Montenegro was accomplished. The data were collected during 2019 from three major ecological sectors of the river. A total of 14... more
Informe de evaluación de Amazonía 2021 El Panel Científico por la Amazonía es una iniciativa sin precedentes convocada bajo los auspicios de la Red de Soluciones para el Desarrollo Sostenible (SDSN) de las Naciones Unidas. El SPA está... more
Using method of registration of electrical potentials caused by chemical stimulation of the skin surface of the head of the carp Cyprinus carpio, the effect of prolonged olfactory deprivation (3, 9, and 12 months after operation) and... more
An original behavioral test was used to study the effect of opioid substances on the thresholds of nociceptive responses to pain stimuli-a series of electric impulses applied to nerve endings of the caudal fin-in the common carp (Cyprinus... more
Present study is aimed to analyze the hydrobiological properties of Balapur pond. The study was conducted during all the three seasons over a period of one year from April 2017 to March 2018. Different hydrobiological parameters viz,... more
Fishes from the coastal basins of the Mid-Northeastern Caatinga ecoregion (MNCE) were first sampled by the Stanford expedition at the beginning of the 20th century, and published by Edwin C. Starks in 1913. This material included... more
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