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435 results for “Stream fish”
FIGURE 49. Oreochromis mossambicus, ROM 22180, 151 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 49. Oreochromis mossambicus, ROM 22180, 151 mm SL, Maple fish hatchery, ON, from Trinidad stock.
FIGURE 47. Cichlasoma taenia, ROM 88783, 104.6 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 47. Cichlasoma taenia, ROM 88783, 104.6 mm SL, drainage canal at approximately 10.459°N 61.074°W, Trinidad.
FIGURE 44. Polycentrus schomburgkii, ROM 88781, 26 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 44. Polycentrus schomburgkii, ROM 88781, 26 mm SL, drainage canal in Sangre Grande, Trinidad.
FIGURE 31. Steindachnerina argentea, ROM 67251, 53 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 31. Steindachnerina argentea, ROM 67251, 53 mm SL, Creek near Hacienda Fundo Malama ca. 11 km N of Caicara- Ciudad Bolivar Highway at Sipao, Venezuela.
FIGURE 28 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 28. Poecilia (Acanthophacelus) reticulata, (a) male, Tobago, (b) female, Tobago. Photos courtesy Ronny Lundkvist.
FIGURE 27 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 27. (a) Poecilia picta, male, ROM 88853, Trinidad, (b) Poecilia picta, female, ROM 88853, Chatham River, Trinidad.
FIGURE 1 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 1. Map of Trinidad & Tobago showing the location of the islands opposite the Venezuelan Paria Peninsula. The main river basins of Trinidad are outlined, and the locations of the sites surveyed in the two islands by Phillip (1998) and the authors of the current publication are illustrated as black dots.
FIGURE 24 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 24. (a) Corynopoma riisei, male, (b) Corynopoma riisei, female, ROM 87578, unidentified stream and nearby ditch, Trinidad.
FIGURE 3. Platystacus cotylephorus, ROM 66328, 218 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 3. Platystacus cotylephorus, ROM 66328, 218 mm SL, beach between Pomeroon and Moruka rivers, Guyana.
FIGURE 20. Trinectes paulistanus, ROM 41801, 53 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 20. Trinectes paulistanus, ROM 41801, 53 mm SL, south of 'Soldado', a small rock off the west coast of Cedros, Gulf of Paria, Trinidad.
FIGURE 6. Aspredinichthys tibicen, ROM 66330, 75 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 6. Aspredinichthys tibicen, ROM 66330, 75 mm SL, beach between Pomeroon and Moruka rivers, Guyana.
FIGURE 23 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 23. (a) Colomesus asellus, ROM 85408, 37.4 mm SL, Rupununi River, Guyana, (b) Colomesus psittacus, ROM 88795, 55 mm SL, Moruga River, Trinidad.
FIGURE 16 in Annotated list and key to the stream fishes of Trinidad & Tobago
FIGURE 16. (a) Rhamdia cf. quelen, ROM 88811, 113 mm SL, Aripo River, Trinidad, and (b) the troglomorphic form of Rhamdia cf. quelen, ROM 45631, 142 mm SL, Oropuche Caves, Trinidad.
Environmental information, geographical location and size spectra of stream fish communities in France
<p>The data includes environmental information, geographical location and size spectrum slopes of 1,095 stream fish communities in France sampled between 2015 and 2018. Stream fish communities were sampled using electrofishing following standardized protocols in streams. Size spectra were calculated using two common techniques: one using the ordinary-least-square linear regression and the other using maximum likelihood estimates. The data is a subset of the original data by the Office Français de la Biodiversité.</p>
Physicochemical habitat data and multi-scale occupancy data for spring-associated fishes in Oklahoma streams
<p class="vC7TJ allowTextSelection">Spring-associated fishes occupy thermally unique habitats in groundwater-dominated streams that are often of high quality. However, outside of water temperature, little else is known about the physicochemical habitat requirements for many of these species. With human effects on streams increasing, it is important to conservation and management to characterize spring habitats and the species that occupy them. Our study objective was to determine the physicochemical factors related to occupancy of four spring-associated species in the Arbuckle Uplift and Ozark Highlands ecoregions, Oklahoma USA. We used a hierarchal approach to identify habitat relationships at multiple spatial scales. We collected detection and non-detection data using both snorkeling and seining methods. We examined the physicochemical relationships related to detection and occupancy for four spring-associated fishes. Data were analyzed using occupancy modeling in a Bayesian framework. Our results indicated water depth and water clarity were important factors affecting detection of spring-associated fishes. Occupancy of our target species differed by ecoregion, with least darter being less common in the Ozark Highlands ecoregion and subadult smallmouth bass being more common in the Ozark Highlands. Interestingly, we found water temperature occupancy relationship for only least darter and southern redbelly dace, whereas redspot chub and smallmouth bass were more likely to occur at sites with deeper pool habitats of larger streams. We documented both spatial and temporal differences in occurrence probabilities at ecoregion, reach, and riffle-run-pool complex scale. Furthermore, our results indicate snorkeling was a superior sampling method compared to seining for detecting most fishes in clear warmwater streams even at relatively low visibilities. Lastly, we demonstrate the importance of using multi-scale studies when developing conservation plans for warmwater fishes.</p>
Data: Diversity-production relationships of fish communities in freshwater stream ecosystems
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Data from: A new composite abundance metric detects stream fish declines and community homogenization during six decades of invasions
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Data from: Stream fish community dynamics: a critical synthesis
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Data from: Population variation in density-dependent growth, mortality and their trade-off in a stream fish
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Data from: Population size, habitat fragmentation, and the nature of adaptive variation in a stream fish
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