Leander serenus Heller, 1862 Palaemon serenus, commonly known as the red-handed shrimp, rockpool shrimp, or rock-pool prawn, is a species of marine shrimp in the family Palaemonidae native to southern and eastern Australia.

[1] They are omnivores, feeding on algae or scavenging for animal matter.

[2][3] Measuring up to 6 cm (2.4 in) long, Palaemon serenus has a transparent body with reddish spots and flecks arranged longitudinally along the abdomen and oblique red lines on the carapace.

[2][3] Females are larger than males and carry eggs under the abdomen.

It inhabits intertidal areas, coastal reefs, and seagrass meadows down to depths of 12 m (39 ft).