Catfish
Catfish
Catfish (/ˈkætfɪʃ/), from the Old English cat and fysc, meaning "fish", is a type of fish that is characterized by their whisker-like barbels. They are a diverse group of ray-finned fish that can be found in freshwater environments, though some species prefer coastal areas near the shore.
Etymology
The term "catfish" is derived from the Old English words cat and fysc, which translate to "fish". This name is believed to have been given due to the barbels, or slender, whisker-like tactile organs near the mouth, which resemble a cat's whiskers.
Anatomy
Catfish are known for their barbels, which resemble a cat's whiskers and are used to search the bottom of their environment for food. They also have a strong, hollow, bony spine-like ray on their dorsal and pectoral fins, which can deliver a stinging protein if the fish is irritated or threatened.
Species
There are numerous species of catfish, each with their own unique characteristics. Some of the most well-known include the Channel Catfish, Blue Catfish, and Flathead Catfish.
Diet
Catfish are omnivores, meaning they eat both plants and other animals. Their diet typically consists of algae, insects, smaller fish, and any other food they can find in their environment.
Habitat
Most catfish are freshwater fish, and can be found in lakes, rivers, and streams around the world. Some species, however, live in saltwater environments, such as the shorelines of the ocean.
Related Terms
- Barbels: Whisker-like sensory organs, located near the mouth of the catfish.
- Omnivores: Animals that eat both plants and other animals.
- Freshwater Fish: Fish that spend most or all of their lives in fresh water, such as lakes and rivers, with a salinity of less than 0.05%.
- Saltwater Fish: Fish that live in ocean water with a high salt content.
External links
- Medical encyclopedia article on Catfish
- Wikipedia's article - Catfish
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