16+ Decorator Crab Reef Safe

September 26, 2026

General

16+ Decorator Crab Reef Safe — Crabs are decapod crustaceans, either the Brachyura (the "true crabs") or various groups within the closely related Anomura (hermit crabs and allies), characterised by having a heavily armoured shell, their tail segments concealed under the body, the ability to run sideways, and the habit of hiding in rocky crevices. Crabs are one of the most diverse and fascinating crustaceans found in oceans, freshwater habitats, and even on land. With thousands of species worldwide, these arthropods come in various shapes, sizes, and colors, each adapted to its environment. Crab, any short-tailed member of the crustacean order Decapoda (phylum Arthropoda)—especially the brachyurans (infraorder Brachyura), or true crabs, but also other forms such as the anomurans (suborder Anomura), which include the hermit crabs. There are over 4,500 species of crabs that can be found all over the world. These crustaceans come in every shape, color, and size, ranging from just a few millimeters wide to a leg span of over 12 ft (3.7 m) (yes, really!). Crabs are crab-like crustaceans best represented by true crabs (Brachyura) within the decapod crustaceans. They have a hard exoskeleton, jointed limbs, and (in true crabs) a shortened abdomen tucked under the body.

Crabs are omnivores, they eat almost anything they find. Often this is algae, but animal food is essential for its good health and development. They will eat molluscs, other crustaceans, worms, fungi and bacteria. [4][5] Crabs are prepared and eaten all over the world. There are over 4,500 types of crabs across the globe, and over 850 different species. If you’d like to know what it is about crabs that have enabled them to live for so long, you’ve come to the right place. Jump straight to the Types of Crabs listing ↡. | 19+ Napoleon Fireplace .