1 Live Scarlet Crayfish/Freshwater Lobster (2+ inch Young Adult) by Aquatic Arts Caution should be exercised when keeping large crayfish: the rule is, if it can catch it, it will try to eat it. Will breed with a mate in home freshwater aquariums! Ships as 2+ inch long young adult that will grow up to 5 to 6 inches long. The deep red coloring on this crayfish will surely make this beautiful animal the centerpiece of your aquarium! As with all of our crayfish, the coloration of the Scarlet crayfish is extremely high quality. All Aquatic Arts (formerly InvertObsession) brand plants and animals come with a 100% live arrival guarantee, plus free email support directly from the owners!