Ecology of Freshwater Fish最新文献

{"title":"The Effect of Temperature, Flow, Density and Disease on Smallmouth Bass (Micropterus dolomieu) Early Life Growth Rate","authors":"Rebecca S. M. O'Brien,&nbsp;Megan K. Schall,&nbsp;Geoffrey D. Smith,&nbsp;Kelly L. Smalling,&nbsp;Tyler Wagner","doi":"10.1111/eff.70063","DOIUrl":"https://doi.org/10.1111/eff.70063","url":null,"abstract":"<p>Individual growth rates of fish are influenced by gradually changing environmental conditions and rapid-onset events. However, there is a paucity of information on drivers of spatiotemporal variability in growth rates of fishes across large spatial extents. Using a 36-year dataset of smallmouth bass (<i>Micropterus dolomieu</i>) length-at-age data across 10 river reaches in Pennsylvania, USA (<i>n</i> = 54,068 individuals), we estimated annual early life growth rates (mm year⁻¹) and assessed the effects of relative abundance, summer temperature, summer streamflow rate and a disease outbreak on growth rate. We found that temperature had a positive effect on growth rate, varied spatially, and had a stronger effect in diseased reaches. There was also evidence for an impact of disease on early life growth through density-dependent mechanisms, with growth rates increasing from ∼85 to 101 mm·year⁻¹ following disease-related decreases in abundance. This study adds to our understanding of the factors that shape early life growth, including rapid-onset events like disease which can have immediate and lasting effects on growth rate trajectory.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.70063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating Acoustic Telemetry and Stable Isotope Data Reveals Overlap in Resource Use by Large-Bodied Fishes in a Temperate Lake","authors":"Ian A. Richter,&nbsp;Alyssa M. Andersen,&nbsp;Karen E. Smokorowski,&nbsp;Paul J. Blanchfield","doi":"10.1111/eff.70057","DOIUrl":"https://doi.org/10.1111/eff.70057","url":null,"abstract":"<p>Temperate lake ecosystems undergo seasonal shifts that disproportionately alter the availability of suitable habitat for fishes of different thermal guilds. While many studies have investigated fish habitat use patterns, few have estimated the degree to which fish species overlap in space across seasons from a three-dimensional perspective. Here, we investigated the seasonal timing of habitat overlap and trophic niches of key fish species—burbot (<i>Lota lota</i>), lake trout (<i>Salvelinus namaycush</i>) and white sucker (<i>Catostomus commersonii</i>)—in a small boreal lake located in Ontario, Canada. Using a spatial telemetry array and pressure-sensing transmitters, we collected 2 years of three-dimensional fish habitat use data, which we paired with stable isotope data (carbon, nitrogen and sulphur) from all trophic levels to distinguish littoral (nearshore), pelagic (offshore) and benthic sources of energy acquisition. Telemetry data analysis showed that three-dimensional space use and habitat overlap significantly differed across species and were season-specific, particularly between burbot and lake trout. Stable isotope analysis demonstrated a high reliance upon littoral resources for the three fish species, which generally matched telemetry estimates of nearshore habitat use, apart from the unexpectedly high littoral signature for burbot. Our joint application of acoustic telemetry and stable isotope analysis provided a deeper insight into the spatial and trophic ecology of these important fish species, clarifying how species with seasonal spatial overlap can thrive by relying on different food resources.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.70057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fragmentation by Dams and Habitat Quality Affect Body Condition of a Small Characid in a Neotropical System","authors":"Ana Carolina Daldegan,&nbsp;Yan F. F. Soares,&nbsp;Paulo Vitor Rabelo,&nbsp;Vinicius Urbano,&nbsp;Bruno E. Soares,&nbsp;Juan P. Quimbayo,&nbsp;Laura B. Paula-Souza,&nbsp;Carmino Emidio Junior,&nbsp;Amanda S. Vasconcelos,&nbsp;Débora L. Ferreira,&nbsp;Veronica Slobodian,&nbsp;Eduardo Bessa,&nbsp;Murilo S. Dias","doi":"10.1111/eff.70059","DOIUrl":"https://doi.org/10.1111/eff.70059","url":null,"abstract":"<p>The structure of stream networks naturally fragments freshwater habitats, but this complexity is increasingly intensified by dams and reservoirs. How anthropogenic fragmentation interacts with natural isolation gradients to affect fish populations remains poorly understood. Here, we tested how natural (position within the river network, i.e., closeness centrality, and elevation) and anthropogenic (cumulative reservoir volume) isolation gradients influenced body condition of <i>Psalidodon</i> aff. <i>fasciatus</i> across stream reaches distributed in two sub-basins upstream of Lake Paranoá, Upper Paraná River basin, Brazil. We estimated body condition as residual mass from the length–weight relationship using generalized linear mixed-effects models, testing effects of isolation predictors and local environmental variables simultaneously. Populations exhibited positive allometric growth, contrasting with typical reports for the species. Contrary to our hypothesis, body mass was significantly higher at sites with greater cumulative reservoir volume downstream. Individuals from the right sub-basin exhibited greater body mass than those from the left sub-basin. Natural isolation predictors (closeness centrality and elevation) had no significant effect. Body mass was significantly positively related to water temperature and negatively related to substrate diversity. Our results suggest that body mass varied in response to environmental conditions and the presence of dams, which may benefit this generalist species by expanding foraging habitats and resource availability. These findings highlight that the impacts of fragmentation are species-specific: while dams can severely affect sensitive species, opportunistic omnivores may exploit newly formed reservoir habitats, potentially reshaping community reassembly in increasingly dammed Neotropical systems.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.70059","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148784059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Beyond Occurrence: Evidence Gaps for Non-Native Freshwater Fishes in Brazilian Drylands","authors":"Jônnata Fernandes de Oliveira,&nbsp;José Egberto Mesquita Pinto Júnior,&nbsp;Danielle Peretti","doi":"10.1111/eff.70060","DOIUrl":"https://doi.org/10.1111/eff.70060","url":null,"abstract":"<p>Non-native freshwater fishes are widely reported in inland waters, but occurrence records are often interpreted together with stronger evidence of establishment, reproduction, spread, pathways and impacts. This can overstate what published records support, especially in regions where reservoirs, river-basin transfers and artificial connectivity complicate biogeographic interpretation. We reviewed published evidence on non-native freshwater fishes in Caatinga-associated aquatic systems of the Brazilian semi-arid region. Searches in Scopus, Web of Science and SciELO retrieved 508 records; after screening and full-text assessment, 65 studies were included. Each study or species-record was coded in a structured evidence matrix for spatial coverage, habitat type, taxonomic identity, author terminology, biogeographic status and evidence dimensions. Occurrence was the dominant evidence type, whereas establishment, reproduction, spread, pathways and impacts were less frequently documented. Reservoirs, dams and river-basin contexts were the most common settings, although natural systems, coastal drainages and water-transfer systems also contributed to the evidence base. Cichlids (six named species), poeciliids (four species) and sciaenids (one species) concentrated many species-records. The review separated species exotic to Brazil from species native to Brazil but recorded outside their expected basin or drainage. This distinction helps avoid treating all non-native records as evidence of invasion. The findings show that assessments of non-native freshwater fishes should distinguish presence from persistence, reproduction, dispersal, pathway and ecological effect. The proposed evidence framework can support monitoring, data review and management decisions in freshwater systems where introductions, basin transfers and artificial connectivity complicate interpretation of non-native records.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.70060","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal Shifts in Collective Behaviour of Floodplain-Associated Schooling Fish","authors":"Adam H. Quade,&nbsp;Kelly S. Boyle,&nbsp;Guillaume Rieucau","doi":"10.1111/eff.70061","DOIUrl":"https://doi.org/10.1111/eff.70061","url":null,"abstract":"<div>\u0000 \u0000 <p>Seasonal flood pulses are associated with environmental variability in large river-floodplain ecosystems, yet the influence on schooling fish remains poorly understood. We used high-resolution imaging sonar to conduct the first in situ assessment of collective behaviour in a Lower Mississippi River Basin floodplain habitat in order to test the hypothesis that floodplain-associated schooling fish alter their collective behaviour in response to changes in floodplain connectivity. As schooling is known to be an adaptive strategy, greater behavioural plasticity would allow schooling individuals to appropriately react to changes in environmental conditions, predation risk and foraging opportunities. We recorded 56 h of video across sites located near and far from the initial point of floodplain inundation during connected (high-water) and disconnected (low-water) periods spanning all four seasons. School area, alignment (polarisation) and inter-individual distance (nearest-neighbour distance) were quantified from 5085 schools comprising 120,114 individuals using a semi-automated approach. Smallest school areas were observed at near sites during disconnected-fall. Schools at the far sites during connected-summer were typically of a larger area than disconnected-summer at near or far sites. Fish swam in a more aligned fashion during connected-summer, while inter-individual distances were lowest during connected-spring and disconnected-summer. Results suggest schooling fish inhabiting the floodplain exhibit behavioural changes at the level of their collective in response to changes in the local environmental conditions. Our findings extend the flood pulse concept beyond traditional assemblage-level response by demonstrating that floodplain connectivity is associated with shifts in the collective behaviour of schooling fishes inhabiting this dynamic environment.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Body Length and Sex as Predictors of the Abundance of Ascocotyle sp. Parasitizing the Heart of the Andean Torrent Catfish Hatcheria macraei in San Juan River From Central Monte Desert","authors":"Fabricio Gómez,&nbsp;Agustina Valenzuela,&nbsp;José Villavicencio,&nbsp;Martín M. Montes","doi":"10.1111/eff.70058","DOIUrl":"https://doi.org/10.1111/eff.70058","url":null,"abstract":"<div>\u0000 \u0000 <p>This study reports the first record of the trematode <i>Ascocotyle</i> sp. parasitizing the Andean torrent catfish <i>Hatcheria macraei</i> and evaluates host and seasonal predictors of parasite abundance in an arid river system. A total of 365 fish were collected seasonally from the San Juan River (Argentina) between 2022 and 2025. Infection was highly prevalent (89.0%), and parasite abundance showed a strongly aggregated distribution that was analysed using generalized linear models with a negative binomial distribution. Host total length was the main predictor of parasite abundance, supporting a pattern of size-dependent accumulation. A significant interaction between length and sex indicated that parasite abundance increased with body size and was higher in females than in males, particularly among larger individuals, whereas smaller fish exhibited low parasite abundance. Seasonality had a limited effect, with parasite abundance being approximately 24% lower in autumn than in winter (<i>p</i> = 0.041), while no significant differences were detected among the remaining seasons. These findings suggest that cumulative infection processes may obscure short-term seasonal variation in transmission. In this arid river system, parasite abundance appeared to be more strongly associated with host characteristics, particularly body size and sex, than with seasonal variation. This study provides new insights into host–parasite interactions in arid Andean freshwater ecosystems.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148617089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genomic Insights Into the Origins and Demographic History of the Invasive Green Swordtail (Xiphophorus hellerii)","authors":"Anna N. Eastis,&nbsp;Kayla M. Fast,&nbsp;Carla Gutiérrez-Rodríguez,&nbsp;Zachary W. Culumber,&nbsp;Michael W. Sandel","doi":"10.1111/eff.70056","DOIUrl":"https://doi.org/10.1111/eff.70056","url":null,"abstract":"<div>\u0000 \u0000 <p>Understanding the factors driving invasion success is critical for managing introduced species. <i>Xiphophorus hellerii</i> (Green swordtail), an ornamental fish popular in the aquarium trade, has established populations worldwide, yet the mechanisms underlying their spread remain unclear. Using nuclear single nucleotide polymorphisms (SNPs) from the <i>X. hellerii</i> native range in Mexico and Central America and the introduced range in the continental United States and Hawaii, we tested the hypothesis that introduced <i>X. hellerii</i> are hybrids with two widely introduced congeners, <i>X. maculatus</i> and <i>X. variatus</i>. To determine whether a single introduction occurred or multiple introductions from different sources, we investigated the geographic sources of introduced <i>X. hellerii</i>. We found no evidence of hybridization with congeners, indicating that hybridization has not significantly contributed to invasion success. We suggest that the source of introduced <i>X. hellerii</i> includes multiple admixed populations from the center of the native range in Mexico, rather than from peripheral populations. Introduced populations form a monophyletic clade, consistent with establishment from a limited number of founders, followed by isolation and genetic drift that homogenized genotypes. Within the native range, peripheral populations show restricted gene flow, while central basins exhibit greater connectivity, consistent with dendritic river systems where mainstem connections and Pleistocene drainage changes enhance genetic exchange. These findings highlight the roles of founder effects and demographic history in facilitating invasion. Resolving these processes is essential for guiding management strategies, predicting potential range expansions, and informing future studies on the colonization of novel environments.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148616036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tapeworm Parasite Burden Is Linked to Diet, Body Size, Condition, Growth, Restocking and Habitat Use in Piscivorous Salmonids of a Subarctic Lake","authors":"Topi K. Lehtonen,&nbsp;Nico Alioravainen","doi":"10.1111/eff.70055","DOIUrl":"https://doi.org/10.1111/eff.70055","url":null,"abstract":"<p>Parasites affect hosts in interaction with the entire ecological community. This is particularly evident for trophically transmitted parasites, such as <i>Dibothriocephalus</i> tapeworms, which infect multiple intermediate fish hosts, potentially reducing their fitness and suitability for human consumption. Here, we used a large, multi-year dataset to examine ecological underpinnings between <i>Dibothriocephalus</i> burden and host traits and diet. In particular, we assessed relationships between parasite burden and body size, body condition, growth, restocking origin and stomach contents in the key piscivorous salmonids, Arctic charr (<i>Salvelinus alpinus</i>) and brown trout (<i>Salmo trutta</i>), in a large subarctic lake, Lake Inari. We found that <i>Dibothriocephalus</i> prevalence was similarly high in both salmonids, with decreasing parasite burden over the years. In both species, larger individuals and those having three-spined (<i>Gasterosteus aculeatus</i>) and/or ninespine (<i>Pungitius pungitius</i>) stickleback remnants in their stomachs had a higher parasite burden, whereas better body condition, quicker growth, stomach contents other than sticklebacks, stocked origin (in Arctic charr) and river habitat (in brown trout) were associated with lower parasite counts. These findings suggest that <i>Dibothriocephalus</i> burden is likely to be costly, while successful foraging on non-stickleback food is associated with lower burden. Overall, the results highlight the intricacy of trophic accumulation of <i>Dibothriocephalus</i> parasites, with sticklebacks playing a special role in their transmission.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.70055","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148358159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of Modified Forest Landscapes on Tropical Fish Assemblages","authors":"Janamina Bandara,&nbsp;Sudath Nanayakkara,&nbsp;Sahan Randeniya","doi":"10.1111/eff.70053","DOIUrl":"https://doi.org/10.1111/eff.70053","url":null,"abstract":"<div>\u0000 \u0000 <p>Tropical freshwater ecosystems are highly biodiverse and increasingly threatened by anthropogenic pressures, yet the ecological processes structuring their communities remain poorly understood. Here, we examine the effects of hilltop forest conversion to commercially important agro-crop landscapes (tea and cardamom) on fish assemblages in submontane streams of the Sinharaja Forest Reserve, with particular focus on the Critically Endangered, narrow-range endemic loach <i>Schistura madhavai</i>. While changes at the community level were not robustly detectable, species-level responses were more pronounced, with <i>S. madhavai</i> showing a preference for forested streams. Forest modification altered environmental gradients (hydrology, water chemistry, substrate, microclimate, and detritus accumulation), concurrently shifting habitat conditions preferred by the focal species, thereby influencing its occupancy. Associations with environmental variables also differed between ecological levels (e.g., detritus, used here as a food-mediated proxy for benthic insectivores, was more important at the species-level than at the community-level), suggesting that species-specific niche requirements influence the magnitude of responses to disturbance. However, such responses may go unnoticed at the community-level because they are buffered by compensatory dynamics among species and obscured by the coarse resolution of community-level metrics. Thus, environmental filtering may appear weak at broader scales despite strong responses among ecologically specialized taxa. Our findings demonstrate that indicator species can provide a more sensitive measure of biodiversity change than community-level metrics alone. We also highlight the importance of incorporating species-specific ecological requirements into conservation planning, particularly for range-restricted endemics inhabiting threatened tropical freshwater ecosystems.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148238106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of Modified Forest Landscapes on Tropical Fish Assemblages","authors":"Janamina Bandara,&nbsp;Sudath Nanayakkara,&nbsp;Sahan Randeniya","doi":"10.1111/eff.70053","DOIUrl":"https://doi.org/10.1111/eff.70053","url":null,"abstract":"<div>\u0000 \u0000 <p>Tropical freshwater ecosystems are highly biodiverse and increasingly threatened by anthropogenic pressures, yet the ecological processes structuring their communities remain poorly understood. Here, we examine the effects of hilltop forest conversion to commercially important agro-crop landscapes (tea and cardamom) on fish assemblages in submontane streams of the Sinharaja Forest Reserve, with particular focus on the Critically Endangered, narrow-range endemic loach <i>Schistura madhavai</i>. While changes at the community level were not robustly detectable, species-level responses were more pronounced, with <i>S. madhavai</i> showing a preference for forested streams. Forest modification altered environmental gradients (hydrology, water chemistry, substrate, microclimate, and detritus accumulation), concurrently shifting habitat conditions preferred by the focal species, thereby influencing its occupancy. Associations with environmental variables also differed between ecological levels (e.g., detritus, used here as a food-mediated proxy for benthic insectivores, was more important at the species-level than at the community-level), suggesting that species-specific niche requirements influence the magnitude of responses to disturbance. However, such responses may go unnoticed at the community-level because they are buffered by compensatory dynamics among species and obscured by the coarse resolution of community-level metrics. Thus, environmental filtering may appear weak at broader scales despite strong responses among ecologically specialized taxa. Our findings demonstrate that indicator species can provide a more sensitive measure of biodiversity change than community-level metrics alone. We also highlight the importance of incorporating species-specific ecological requirements into conservation planning, particularly for range-restricted endemics inhabiting threatened tropical freshwater ecosystems.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"35 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148238290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}