King Demoiselle, scientifically known as Chrysiptera rex, is a type of damselfish belonging to the Pomacentridae family.
It lives in reefs found in the eastern Indian Ocean and western Pacific. This fish is popular in the aquarium trade.
Adult King Demoiselles are usually found at depths of 1 to 6 meters and sometimes up to 20 meters.
They are found alone or in groups around reef edges and upper seaward slopes with mild water movement. Their main food source is algae.
King Demoiselles are active during the day (diurnal) and are safe for coral reefs.
You can check out what this fish looks like over here.
King Demoiselle Interesting Facts
- King Demoiselle is a small, colorful fish found in reefs across the Indo-West Pacific region.
- They grow up to 2.8 inches (7.0 centimeters) long and feed mainly on algae.
- During the breeding season, these fish form pairs and lay sticky eggs that males guard and aerate.
King Demoiselle Habitat
King Demoiselle lives in the Indo-West Pacific region, including areas like the Indian Ocean, Ryukyu Islands, Taiwan, Philippines, Palau, Indonesia, New Guinea, New Britain, Solomon Islands, Vanuatu, New Caledonia, and the Great Barrier Reef.
It’s a marine fish that lives near reefs. It doesn’t migrate and is found at depths of 1 to 20 meters (3 to 65 feet).
This tropical fish is found in waters with latitudes ranging from 34°N to 23°S.
| Water Temperature: | Unknown |
| Water pH: | Unknown |
| Water Hardness: | Unknown |
King Demoiselle Physical Characteristics
Size: 2.8 inches (7.0 centimeters)
King Demoiselle is a small fish that grows up to 2.8 inches (7.0 centimeters) long.
It has 13 dorsal spines, 13 to 14 dorsal soft rays, 2 anal spines, and 13 to 14 anal soft rays.
Adults have a yellowish-white body with a yellow-orange forehead that extends to the front of their back.
Each scale has a blue dot, and the area near the pectoral fin is orange.
The upper edge of the gill cover has a small dark spot. Young ones are bright pink in color.
King Demoiselle Reproduction
King Demoiselles lay eggs (oviparous) and form distinct pairs when breeding.
Their eggs stick to surfaces underwater (demersal). Male fish guard and provide oxygen for the eggs.
King Demoiselle Scientific Classification
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Family: | Pomacentridae |
| Genus: | Chrysiptera |
| Scientific Name: | Chrysiptera rex |
| Also Known As: | King Demoiselle |
| Conservation Status: | Unknown |