Table of Contents
Is a swordfish a vertebrate or invertebrate?
Although fish in general are cold-blooded vertebrates, swordfish and many of their scombroid relatives are warm-blooded, at least during strenuous activity, when their blood will be several degrees higher than the surrounding waters.
Does fish have a backbone?
All fish share two traits: they live in water and they have a backbone—they are vertebrates.
Is there a fish without a backbone?
Hagfish are the only species of fish that we know of that don’t have a backbone even though they are classed as fish.
What type of body does a swordfish have?
Swordfish are elongated, round-bodied, and lose all teeth and scales by adulthood. These fish are found widely in tropical and temperate parts of the Atlantic, Pacific, and Indian Oceans, and can typically be found from near the surface to a depth of 550 m (1,800 ft), and exceptionally up to depths of 2,234 m.
What are invertebrates examples?
An invertebrate is an animal without a backbone. In fact, invertebrates don’t have any any bones at all! Invertebrates that you may be familiar with include spiders, worms, snails, lobsters, crabs and insects like butterflies. However, humans and other animals with backbones are vertebrates.
Which of the following organisms have a backbone?
The animals with backbone are called vertebrates.
Do fish have spinal cords?
Fish are vertebrates. All vertebrates are built along the basic chordate body plan: a stiff rod running through the length of the animal (vertebral column or notochord), with a hollow tube of nervous tissue (the spinal cord) above it and the gastrointestinal tract below.
Which fish are vertebrates?
Number of extant species
|Anamniote lack amniotic membrane so need to reproduce in water||Jawless||Hyperoartia (lamprey)|
Which animals have a backbone?
The 5 groups of vertebrates (animals that have a backbone) are fish, amphibians, reptiles, birds, and mammals.
What animal has no backbone?
Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate group – they do not have a backbone. Fish, reptiles, birds, amphibians and mammals are different sub-groups of vertebrates – they all have internal skeletons and backbones.
Is a swordfish a predator or prey?
Xiphias gladius are apex predators that feed throughout their depth range on other pelagic fishes, squids and other cephalopods. They use their “sword” to slash larger prey while smaller prey are consumed whole.
Does a swordfish sword grow back?
Fishermen often catch swordfish with mangled swords, so breaking one isn’t fatal, but they do help their owners swim faster and feed. And they don’t seem to grow back, at least not for adults.