Aquatic Arts 1 Live FEMALE Electric Blue Crayfish/Freshwater Lobster (2-3 Inch Young Adult) 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 male mate in home freshwater aquariums! They ship as 2 to 3 inch long young adults. As with all of our crayfish, the coloration of the Electric Blue crayfish is EXTREMELY high quality - much higher quality than others on the market! This crayfish may TEMPORARILY change color after molting, which may occur during shipping. If your crayfish is not blue and you find a molt in the bag or in your aquarium, do not worry; this is normal and the bright color will return in 2 weeks or less. All InvertObsession brand plants and animals (sold by Aquatic Arts) come with a 100% live arrival guarantee, plus free email support directly from the owners!