Cleaning-symbiosis
Guides
Grapsus grapsus
Sally Lightfoot Crab, Red Rock Crab, Abuete Negro
Grapsus grapsus is a common intertidal crab native to the Pacific and Atlantic coasts of the Americas. Adults display highly variable coloration ranging from brownish-red to mottled yellow and pink, while juveniles are darkly colored for camouflage on volcanic substrates. The species is renowned for its agility and rapid escape response, making it difficult to capture. It occupies rocky shorelines just above the spray zone and has been documented engaging in cleaning symbiosis with marine iguanas in the Galápagos.
Hippolytidae
broken-back shrimp, cleaner shrimp, anemone shrimp, hump-backed shrimps
Hippolytidae is a family of marine caridean shrimp commonly known as broken-back shrimp, cleaner shrimp, or anemone shrimp. The family was redefined in 2023, with several former genera transferred to other families (Bythocariidae, Lysmatidae, Merguiidae, Thoridae), leaving 16 genera in Hippolytidae sensu stricto. Some members engage in cleaning symbiosis with fish, removing parasites and debris from host bodies. The family shows both diurnal and nocturnal activity patterns, with behavioral differences in cleaning site preferences.
Stenopus hispidus
banded coral shrimp, banded cleaner shrimp, coral banded shrimp
Stenopus hispidus is a marine decapod crustacean in the family Stenopodidae, recognized as one of the most widely distributed cleaner shrimps in tropical seas. The species reaches 60 mm in total length and exhibits striking red-and-white banded coloration on the carapace, abdomen, and enlarged third pereiopods. It is exclusively monogamous, with pairs occupying reef territories 1–2 meters in diameter. The species advertises cleaning services to client fish through a distinctive "dancing" behavior involving lateral antennae movement, and removes parasites, fungi, and damaged tissue using its three pairs of claws. Females are typically larger than males and carry externally fertilized eggs until hatching.