if your question is why does a dragon fly look like a crayfish? they don't look the same at all. the crayfish looks like a lobster but that is it.
Crayfish are related to small lobsters. Here is a link for pictures of crayfish. http://mackers.com/crayfish/pics.htm
Yes the antenna on a crayfish are there. But they are there to sensor things when the crayfish are moving. Sort of like a snakes tongue.
A crayfish eye looks like a beanie baby animal's eye. It looks like a tiny little black pebble. The eyes stick out of the side of the crayfish's head.
No, the crayfish is basically a miniature breed of lobster. Crayfish have exoskeletons like crabs and insects. That is what holds them together.
no
you are poo
A crayfish's heart works like a humans. it pumps blood through the body.
Just like any other living thing ... Yes .
Many things eat crayfish like sea eagles, sharks and larger fish
Live minnows or crayfish, crankbaits, spinnerbaits, plastics like worms or crayfish imitators.
Spider.