Of the same family as the lobster and crayfish, this little animal with its long slender body, uniformly bright pink in color, measures 7.4 to 10 cm on average and its weight ranges from 3 to 15 g. It’s interesting to note that the coldwater shrimp’s shell or exoskeleton is hard, so in order to grow it has to shed it. It is also a “protandric hermaphrodite,” meaning that it changes sex in the middle of its life cycle, beginning life as a male, then changing into a female at age 4.