Crayfish Research Paper

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Crayfish Crayfish are a fascinating animal living in different places such as the sea, ocean, lakes, and creeks. It belongs to the phylum Arthropoda family. It has different organisms and an exoskeleton, jointed appendages, and segmented bodies. The Arthropoda has a very interesting meaning: it means joint foot. Animal anatomy is external and internal anatomy. The Crayfish has an interesting body, it's divided into two parts: the cephalothorax which has the head and the weirdly shaped upper body and then the abdomen which is the tail. In both of these regions, you can find appendages which are used to walk. The head of the Crayfish has these things called stocks which hold up their small eyeballs. Then they have these long things that stick in front of the head which are like antennas, these are used to show the things around them in the water. …show more content…
The mandibles help the crayfish to walk, but the two in the front are like snappers which are very strong. The crayfish is a carnivorous creature; it only eats smaller fish and small crabs. On the head of the crayfish, there are two kinds of antennas: the big ones and then the small ones; the small ones are used for taste, and I guess a type of smell. The bigger ones are used for sensing things in the water. The abdomen is where all the intestines are located, such as the digestive system. Food goes down directly from the foregut to the esophagus. The foregut of a crayfish is double-chambered. The area closest to the front is the cardiac chamber; this chamber is a small compacted chamber. The cardiac chamber sorts out the food for the fish to digest. Then there is the pylorus, which is the bigger of the two. This is separated between the top and at the end of the ventral which leads to a surtein glan. This chamber is like a filter, this allows the intestine particles to reach the hepatopancreas, also known as the digesting
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