The dorsal margin of the carapace and the abdomen have tufts of setae, which are denser in the females.

The males have elongated chaelae which are longer than body and the females possess an obvious brush-like structure of setae on the first pair of legs.

[2] It is nocturnal and it can vary the colour of its body so that at night it turns primarily red, camouflaging the shrimp in the twilight.

[8] Saron marmoratus is an omnivore which sifts through the fine substrate at night searching for organic detritus, plankton and other edible items.

It has also been known to scavenge on larger food items, such as fish, which fall to the sea bed.