Catfish are scientifically
known as Siluriformes. They are a various group of fish that have
fins supported by thin bony rays. More than ***0 species of catfish
are scattered in all continents except for Antarctica. Catfish
lives in freshwater ecosystems such as rivers and streams but some
species of catfish can also live in saltwater and caves.
Aquaculture farmers choose this type of fish to farm the most
because people eat catfish as a specialty food around the world.
Overfishing and water pollution are two of the reasons that some
types of catfish such as Mekong catfish are highly in danger of
extinction.
Catfish have specific features such as smooth, slightly flat, and
long whiskers sticking out from around their mouth. Catfish have no
scale; instead, their bodies are covered in slippery mucus to
protect them from bacteria when out of the water and to breathe
through the skin in some species. In some species of the
Siluriformes order, a tough layer of bony plates or scutes covers
the body of catfish to protect them from predators. Catfish are
mostly identified by their wide flat heads and long whiskers called
barbels that hang out from their mouth.
Vannamei shrimps are graded
based on the land they are farmed. The lighter the color of the
Vannamei shrimp, the higher the quality or the grade is. A1 grade
is the best quality of vanami shrimps and A5 is the lowest grade or
quality. Wholesale vannamei shrimps with A1 grade are often sold to
the European Union countries and Russia. The only type of shrimps
that are known as farmed shrimps and produced in large volumes all
over the world are the vannamei shrimps.
