Aquatic Arts 1 Live Panther Crab (Parathelphusa pantherina) - 1-3 inch Juvenile - Fully Aquatic Crayfish Alternative This is a fully aquatic crab, meaning it can always stay immersed in water and can therefore be kept in an aquarium! Ships as a 1 to 3 inch juvenile, but grows up to a maximum of 5 inches in diameter as an adult. Panther crabs come in various shades of orange and are speckled with dark spots that appear large on the body and diminish in size on the legs. This crab is known for its attractive coloration and lively personality, so it's sure to provide hours of entertainment! All Aquatic Arts (formerly InvertObsession) brand plants and animals come with a 100% live arrival guarantee, plus free email support directly from the owners!