What fish live in the sea? Popular saltwater fish are
bluefish, cod, flounder, striped bass (also found in freshwater), sea trout, tarpon, tuna, halibut, rockfish, sea perch, lingcod, and yellowtail
. An estuary is where fresh water streams and rivers meet the salt water from the ocean.
What are the three types of fish?
Nelson, among others. Fishes are typically divided into three groups:
superclass Agnatha (jawless fishes), class Chondrichthyes (cartilaginous fishes), and superclass Osteichthyes (bony fishes)
. The latter two groups are included within the infraphylum Gnathostomata, a category containing all jawed vertebrates.
Is shark a true fish?
Sharks are fish
. They live in water, and use their gills to filter oxygen from the water. Sharks are a special type of fish known because their body is made out of cartilage instead of bones like other fish.
Is a jellyfish a fish?
Watching them can make you wonder, what are they?
Jellyfish are not really fish
, of course, because a fish's anatomy is centered around its backbone, whereas the jellyfish is a dome-shaped invertebrate.
What is the common fish?
The
Atlantic cod
, or simply cod, is among the most consumed fish (by humans) in the world. They are found on both sides North Atlantic Ocean as well as parts of the Arctic Ocean including the North Sea and Baltic Sea.
Even more broadly,
octopuses are invertebrates
. This classification includes all animal species except those belonging to the subphylum Vertebrata, which includes fish, mammals, reptiles, birds and amphibians. Invertebrates are characterized by their lack of a backbone.
On coral reefs, “Dory,” the
small vibrant blue fish with black stripes and a yellow tail
, is known by several other names: Hippo Tang, Royal Blue Tang, Regal Tang, Palette Surgeonfish and by the scientific name Paracanthurus hepatus.
Fish lay eggs, which must still grow into a baby fish. So
whales are indeed mammals and not fish
! Answer 5: Whales are mammals because they share the characteristics of other mammals (like us!).
“
Fish do feel pain
. It's likely different from what humans feel, but it is still a kind of pain.” At the anatomical level, fish have neurons known as nociceptors, which detect potential harm, such as high temperatures, intense pressure, and caustic chemicals.
Representative species
Sea stars, commonly called, “starfish,” are not fish
.
Sea stars live underwater, but that is where their resemblance to fish ends. They do not have gills, scales, or fins. Sea stars live only in saltwater. Sea water, instead of blood, is actually used to pump nutrients through their bodies via a ‘water vascular system.
Any waste – that's poop – then comes back through the mouth
. That's because jellyfish only have one opening into their stomach, so waste comes out the same opening as food goes in.
You can eat jellyfish in many ways, including shredded or sliced thinly and tossed with sugar, soy sauce, oil, and vinegar for a salad
. It can also be cut into noodles, boiled, and served mixed with vegetables or meat. Prepared jellyfish has a delicate flavor and surprisingly crunchy texture.
A Crab Is Not a Fish
: Unique Aspects of the Crustacean Endocrine System and Considerations for Endocrine Toxicology. Crustaceans—and arthropods in general—exhibit many unique aspects to their physiology.
Even though they live in the ocean all of the time,
dolphins are mammals, not fish
. Like every mammal, dolphins are warm blooded. Unlike fish, who breathe through gills, dolphins breathe air using lungs. Dolphins must make frequent trips to the surface of the water to catch a breath.
Turtles are
reptiles
of the order Testudines that have bodies encased in bony shells. There are more than 350 species of turtles.
Seahorses are not typically eaten raw
, although there does not appear to be any specific reason why. They are usually fried and put on a stick or dried for future use in soups, teas, and rice wine.
It's a delicious type of shellfish – actually,
lobster is not a fish at all
, it's a crustacean and more closely related to the woodlouse than it is to any fish. It's similar to crab but more expensive and considered a delicacy and a rare treat.
Despite the name,
shellfish are not fish
. Most shellfish are low on the food chain and eat a diet composed primarily of phytoplankton and zooplankton.
