The Banded Coral Shrimp (
Stenopus hispidus) often called the Boxer Shrimp, isn't technically a true shrimp. As a member of the Stenopodidae family, it stands apart from true shrimp species. These shrimp-like crustaceans are easily recognized by their striking red-and-white banded bodies and large, claw-like pincers, resembling a boxer’s gloves. Their long antennae, extended legs (pereiopods), and clawed limbs (chelipeds) are key features that aid in feeding and defense.
Banded Coral Shrimps are typically found in pairs or small groups. They are nocturnal, resting under overhangs and crevices during the day, and becoming active at dusk. At this time, they perch on top of their shelters, ready to clean passing fish. Females are generally larger than males, and their average length is about 6 cm. Banded Coral Shrimps clean other fish by removing dead tissue, parasites, and leftover food. They attract clients with a little dance and antennae wiggles. While most of their diet comes from their cleaning job, they also eat small worms and crustaceans. Unlike most invertebrates they have the unique ability of detecting other Coral Banded Shrimp; they do this through chemical signals.
Banded Coral Shrimps are monogamous, remaining with a single partner for life. Each pair defends a small territory of less than 1 square meter from other crustaceans. They may shift their territory over time but always stay together. Molting, which occurs every 3 to 8 weeks, allows them to grow by shedding their old exoskeleton and forming a new one. Lost body parts usually regrow after the next molt. Mating happens post-molt, with the male performing a courtship dance before transferring a sperm sac. The female fertilizes her blue-green eggs and attaches them to her abdomen. After about 16 days, the eggs hatch, and the young remain attached to the mother's exoskeleton for six weeks before becoming free-floating plankton. After several molts, they settle on the reef, hiding from territorial adults.
Where to Find Banded Coral Shrimps on Koh Tao
You can spot Banded Coral Shrimps at popular dive sites around Koh Tao, including Sail Rock, Southwest Pinnacle, Chumphon Pinnacle, Green Rock, etc,,,
