Common name: dahlia

General information

The Yellowtail Coris, Coris gaimard, is a vibrant and active fish that adds a splash of color to any marine aquarium. Juveniles exhibit a striking pattern of white and black with orange spots, which transitions to a bright red body with blue-green markings in adults. This species is known for its remarkable ability to change sex from female to male as it matures, a process known as protogynous hermaphroditism.

Care

Coris gaimard requires a spacious tank with a sandy substrate to accommodate its burrowing behavior. It is an active swimmer and needs plenty of open space. This wrasse is not reef-safe, as it may prey on small invertebrates and disturb the substrate, potentially harming sessile organisms. A varied diet of meaty foods, including frozen mysis shrimp and brine shrimp, will keep them healthy and vibrant.

Reproduction

In the wild, Coris gaimard forms harems consisting of a dominant male and several females. Breeding in captivity is rare, but if conditions are right, the dominant female may transition to male, and spawning may occur. The eggs are pelagic, floating in the water column until hatching.

Habitat

Native to the Indo-Pacific region, the Yellowtail Coris can be found on coral reefs and rocky substrates from shallow lagoons to depths of over 60 meters. They are commonly seen in areas with abundant live rock or coral formations that provide shelter and foraging opportunities.