Scientific Name: Saron marmoratus
Common Name: Marble Shrimp, Saron Shrimp, Marbled Cleaner Shrimp

Adult Size: 4 – 6 cm (some females can reach slightly larger sizes)
Depth Range: 1 – 40 m; commonly seen on shallow reefs, especially at night
Biotope / Habitat: Coral reefs, rubble zones, under ledges and within crevices; usually hidden during the day and active at night
Diet: Omnivorous scavenger — feeds on detritus, plankton, algae, and small invertebrates; occasionally performs cleaning behavior on fish
Reproduction: Separate sexes (gonochoric); females carry eggs under their abdomen until they hatch into free-swimming larvae
Fun Fact: Saron marmoratus can change color from mottled brown-green during the day to bright red at night. Males have enlarged, feather-like chelae (claws) used in displays and competition.

With their flamboyant spotted legs and elaborate fringed claws, Saron marmoratus are some of the most striking shrimps found on tropical reefs. Often shy during daylight hours, they become more active and visible at night, when their coloration shifts to a vivid red. Males are especially recognizable thanks to their large, brush-like claws and longer rostrum (the horn-like extension on the head).

They are mostly seen alone or in small groups and are skilled scavengers, helping keep the reef clean. In aquariums, they’re popular but may become aggressive or eat smaller tankmates — so it’s better to admire them in the wild!