Rolland’s Demoiselle is a type of damselfish belonging to the Pomacentridae family.
This fish lives alone or in small groups near lagoons, harbors, and reefs. Its habitat includes corals and broken coral pieces.
Rolland’s Demoiselle’s main food source is zooplankton.
DNA research shows that there could be at least three different species of this fish from various regions like the Andaman Sea, Indo-Australian archipelago, and New Caledonia with the southern Coral Sea.
Rolland’s Demoiselle is active during the day and safe for reef environments.
Rolland’s Demoiselle Interesting Facts
- Rolland’s Demoiselle grows up to 2.95 inches (7.5 centimeters) long and has a unique color pattern with dark brown and blue streaks on the head and front part of its back.
- They inhabit tropical waters in the Eastern Indian Ocean and Western Pacific regions, preferring depths of 2 to 35 meters.
- As an oviparous species, these fish lay eggs that stick to underwater surfaces, with males providing protection and oxygenation during breeding.
- DNA research suggests there could be at least three different species of Rolland’s Demoiselle from various regions like the Andaman Sea, the Indo-Australian archipelago, and New Caledonia.
Rolland’s Demoiselle Habitat
Rolland’s Demoiselle lives in the Eastern Indian Ocean and Western Pacific regions.
It’s found from the Andaman Sea to the Loyalty Islands, as well as from the Philippines to the Great Barrier Reef and New Caledonia. This fish has also been spotted in Tonga.
Moreover, Rolland’s Demoiselle is a marine fish that lives around reefs. It doesn’t migrate and prefers depths of 2 to 35 meters.
These fish inhabit tropical waters between latitudes of 20°N to 23°S.
Rolland’s Demoiselle Physical Characteristics
Size: 2.95 inches (7.5 centimeters)
Rolland’s Demoiselle grows up to 2.95 inches (7.5 centimeters) long. It has 13 dorsal spines, 10 to 11 dorsal soft rays, 2 anal spines, and 12 to 13 anal soft rays.
Rolland’s Demoiselles head and front part of the back are dark brown with blue streaks while the lower part is creamy white in color.
Rolland’s Demoiselle Reproduction
Rolland’s Demoiselle lays eggs, known as oviparous. During breeding, this fish forms distinct pairs.
The eggs stick to surfaces underwater. Male Rolland’s Demoiselles protect and provide oxygen to the eggs by aerating them.