Hello, have you eaten a shell fish before? If you have not it is exoskeleton-bearing aquatic invertebrates used as food.
I have eaten shell fish before. In fact, where I live the Native American population significantly relied on shellfish for food
Nice, harvested from saltwater environments, some kinds are found in freshwater.
What kinds are found in freshwater?
Shellfish
Shellfish is a colloquial and fisheries term for exoskeleton-bearing aquatic invertebrates used as food, including various species of molluscs, crustaceans, and echinoderms. Although most kinds of shellfish are harvested from saltwater environments, some are found in freshwater. In addition, a few species of land crabs are eaten, for example "Cardisoma guanhumi" in the Caribbean. Shellfish are among the most common food allergens.
Despite the name, "shellfish" are not actually fish, but are simply water-dwelling animals. Most
, while solid and heavily built forms stayed where they were or migrated into freshwater. The increase of primary productivity on land during the late Devonian changed the freshwater ecosystems. When nutrients from plants were released into lakes and rivers, they were absorbed by microorganisms which in turn was eaten by invertebrates, which served as food for vertebrates. Some fish also became detritivores. Early tetrapods evolved a tolerance to environments which varied in salinity, such as estuaries or deltas.
Origin Lungs before land.
The lung/swim bladder originated as