1 The posterior pituitary lobe releases two hormones that are produced in the hypothalamus:  Oxytocin, which is responsible for stimulation of milk ejection (milk letdown) and for stimulation of uterine smooth muscle contraction at birth.
Crayfish and crawfish are crustaceans living in freshwater with a great resemblance of the lobsters. However, their size is smaller compared to the lobsters.
Crayfish Habitat, Food, Trapping, & Aquariums. Crayfish are small crustaceans that live in freshwater water habitats in which do not freeze over in cold conditions. Depending on where you are location wise, the crayfish is also referred to as a crawdad or crawfish.he best thing to use in a crayfish trap are usually going to have a very strong scent because crayfish use their tentacles to go off of sent in the water. But I have had the best luck with personally is just dead fish or dead fish guts.