Yes, a catfish is a type of shark.
no
The only know shark that prey on catfish is the Bull shark (Carcharhinus leucas).
scales,smooth scales , different colors
spiky skin, hard scales shark
yeah, Catfish have no scales at all. They feel really wierd and fleshy
there is only one main type of shark that can be in freshwater where catfish live which is the bull shark if they could get their jaws onto a catfish they would probably eat it
a human :0)
The Mekong Giant Catfish is a part of the Shark Catfish Family.
Shark skin is not soft and smooth as they it is covered in specialized scales. These scales are called placoid scales or dermal denticles.
Scales act as a kind of armor, helping protect the skin of fish. Scales also help water move more smoothly over a fish as it swims. Even so, some fish, such as catfish and lampreys, have no scales.
Despite its name, iridescent shark, Pangasius hypophthalmus is not a shark, but a catfish. This fish is also known as Siamese shark or sutchi catfish in the aquarium hobby or as tra, swai, or striped catfish in the food fish market, and occasionally incorrectly as basa and panga (though these names should be rather used for Pangasius bocourti and Pterogymnus laniarius, respectively). The species is found in Southeast Asia in the Mekong basin as well as the Chao Phraya river, and is heavily cultivated for food there. It has also been introduced into other river basins as a food source and is common in the fishkeeping hobby. It is named for its glow or iridescence exhibited in juveniles.