to get a better view of the crayfish
The crayfish has a pair of legs called chelipeds, more commonly known as pinchers. The joint motion of these pinchers allow the crayfish capture prey and defend itself.
they pull there tail under there body and it makes them swim bckward
Slight fast motion can create a sense of urgency and dynamism, moderate fast motion can enhance the pace and tension of a scene, and extreme fast motion can convey chaos or intensity. The impact of each depends on the context and how it complements the overall storytelling.
why chlorpromazine is not used in motion sickness
They crawl with their legs, and they swim really fast by turning around and flipping their tail back very fast repeatedly.
Crayfish
Without much more information the question can not be answered accurately. Crayfish are scavengers and guppies are not their natural prey. If the crayfish is small enough and your guppies don't have long flowing fins then the guppies may well be too fast for the crayfish to catch. So the answer then would be none. Are you feeding the crays dead guppies? If so I would add one and see how long it takes the crayfish to eat it. Then I would add more and more dead guppies one at a time as the crayfish devours them. As the crayfish grows so it will eat more.
they have a shell to protect a small tail thing so they can push off realy fast
A crayfish doesn't really have to use too much conniving to capture its prey, as it will just eat anything that doesn't get out of the way fast enough. The crayfish will grab food with its pincers and eat the food.
Racing because friction slows you down but you need to go fast.
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