Crayfish will actually attack fish. It is best to keep them separated.
A crayfish heart is only a single pump right in the middle of an open circulatory system. It pushes fluid into the body cavity and lets it flow back through the ostia, a group of open ended pores.
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.
spiders: book lung grasshopper : trachea crayfish: gills
Some species of crayfish, such as the spiny lobster, are saltwater animals, while other species, such as the kabby or koura, are freshwater animals. It all depends on which species of crayfish you are referring to.
A crayfish's heart works like a humans. it pumps blood through the body.
The heart is used to pump the pee out of the crayfish It is also used to shot posion out a attacking preditors
The heart is used to pump the pee out of the crayfish It is also used to shot posion out a attacking preditors
A crayfish has one heart that contains two chambers
Food, and that is pretty much it.
in the left part of the thorax
The heart of the crayfish pumps to circulate the blood. The blood flows through the open cavities as there is a minimum of tubing in the crayfish. The circulation of the blood aerates and purifies it.
humans hearts are in their chest but crayfishs hearts are in their but
http://www.davidlnelson.md/Cazadero/CazImages/Crayfish_anatomy.jpg
Red fish work best for crayfish. But anything will do really. Kahawai, Gounard etc.
Crayfish are scavengers and will consume nearly anything is can grip. Sinking Shrimp pellets work well.
because they need it if they don't have it they will die it protects the heart and the eyes and the stomach.