Freshwater fish
Freshwater Fish
Freshwater fish (/ˈfrɛʃˌwɔːtər fɪʃ/) are fish species that spend some or all of their lives in freshwater, such as rivers and lakes, with a salinity of less than 0.05%. These environments differ from marine conditions in many ways, the most obvious being the difference in levels of salinity. To survive fresh water, the fish need a range of physiological adaptations.
Etymology
The term "freshwater fish" is a compound of the words "fresh" and "water fish". "Fresh" comes from the Old English fresc, meaning "pure, sweet, not salt, not sea". "Water" comes from the Old English wæter, meaning "water". "Fish" comes from the Old English fisc, meaning "fish".
Types of Freshwater Fish
There are many different types of freshwater fish, including:
- Carp: A large group of fish originally found in Central Europe and Asia.
- Catfish: A diverse group of ray-finned fish.
- Bass: A name shared by many species of fish.
- Trout: Fishes that are part of the salmon family.
- Salmon: Fish in the family Salmonidae.
Related Terms
- Aquarium: A vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed.
- Ichthyology: The branch of zoology devoted to the study of fish.
- Fishkeeping: The hobby of keeping fish in an aquarium or pond.
See Also
External links
- Medical encyclopedia article on Freshwater fish
- Wikipedia's article - Freshwater fish
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