Ceriagrion cerinorubellum, commonly known as the orange-tailed marsh dart or bi-coloured damsel, is a medium-sized species of damselfly in the family Coenagrionidae. They have a pale green head and distinctive orange-colored segments at the base and end of the abdomen. In the female, the orange segments at the base of the abdomen are much duller than in the male. They live around ponds, rivers, and canals where they rest on dry twigs and vegetation over the water. It is the most common species of damselflies in Singapore, and can be found in many parks. They attack and feed on other species of smaller damselflies.