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Why is a crayfish not a fish?
A crayfish is not a fish because they have bones on the outside of their body fish don't.
What do crayfish have instead of bones?
An exoskeleton - i.e. a shell.
How can you tell if an animal has bones on the outside?
Animals with bones on the outside have an exo-skeleton. Crabs, crayfish, lobsters and many insects have their bones on the outside.
Do crayfish have a bachbone?
Nope. They have a shell, known as an exoskeleton. Means bones are on the outside (the shell takes the place of bones)
What 2 systems of a crayfish are most unlike human systems?
Exoskeleton: Crayfish have a hard shell, and no bones. That makes crayfish invertebrates (no spine). Gills: Crayfish respire underwater through gills, where humans use lungs. The circulatory system is the second one, the reason for this being that crayfish have no blood vessels (and humans obviously do).
What is the freshwater lobster?
Crayfish
Is crayfish blind?
Crayfish can hear, but they do not have ears, so they do not hear in the usual sense. Our ears pick up vibrations via the eardrum and tiny bones in our ears, but crayfish have thousands of sensory bristles. Some of these sensory bristles respond to chemicals, others to touch, but either way, they enable te crayfish to not only hear, but also to smell and feel.
What do they call crayfish in Australia?
Crayfish are known as both crayfish and yabbies in Australia. "Yabbies" are freshwater crayfish, often found in rivers, creeks and dams in rural areas.
Is your crayfish dieing?
My older crayfish died and my littler crayfish has not yet how do/can they die?
What does the exoskeleton do in a crayfish?
protects the crayfish
Do crayfish have territories?
Do crayfish have tarritoris
Is a crayfish a herbavoir?
Crayfish are omnivores.
