Search results
Results from the WOW.Com Content Network
Some fish, such as sharks, use stiff, strong fins to create dynamic lift and propel themselves. It is common for fish to use more than one form of propulsion, although they will display one dominant mode of swimming [19] Gait changes have even been observed in juvenile reef fish of various sizes. Depending on their needs, fish can rapidly ...
[3] [4] Each filament contains a capillary network that provides a large surface area for exchanging oxygen and carbon dioxide. Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills. In some fish, capillary blood flows in the opposite direction to the water, causing countercurrent exchange. The ...
Freshwater fish of the United States: Idaho, Maryland, Oklahoma, Oregon, Washington, West Virginia, plus a List of official and unofficial fishes by state; Lake ecosystems; List of common fish names; List of fishes in Bangladesh; List of fishes of Great Britain; List of freshwater fishes of Greece; List of freshwater fishes of Korea; River ...
However, some fish show a tremendous ability to effectively osmoregulate across a broad range of salinities; fish with this ability are known as euryhaline species, e.g., salmon. Salmon has been observed to inhabit two utterly disparate environments — marine and fresh water — and it is inherent to adapt to both by bringing in behavioral and ...
Osteichthyes (/ ˌ ɒ s t iː ˈ ɪ k θ iː z / ost-ee-IK-theez), [2] also known as osteichthyans or commonly referred to as the bony fish, is a diverse superclass of vertebrate animals that have endoskeletons primarily composed of bone tissue.
Fish are sought after by humans for their value as commercial food fish, recreational sport fish, decorative aquarium fish and for tourism, as they attract snorkelers and scuba divers. Throughout human history, important fisheries have been based on forage fish. [132] Forage fish are small fish which are eaten by larger predators.
The health of an aquatic ecosystem is degraded when the ecosystem's ability to absorb a stress has been exceeded. A stress on an aquatic ecosystem can be a result of physical, chemical or biological alterations to the environment. Physical alterations include changes in water temperature, water flow and light availability.
Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups.Ambiguous common names are accompanied by their possible meanings.