In a world first, Okinawa Churaumi Aquarium has successfully bred the yellowspotted trevally, and begun to exhibit the offspring in the individual water tanks of the Coral Reef Gallery. 

【Size of Exhibit】

Four individuals　全長：約5㎝(Date of hatching: August 29th to 30th 2025) 

【Place of exhibit】

Churaumi Aquarium “Small Life in the Coral Reef” corner.
*Exhibit may close depending on the condition of the animals.

　Okinawa Churaumi Aquarium displays adult yellowspotted trevally in the Kuroshio Sea Tank. Spawning is observed at certain times of year. We collect their fertilized eggs, and place them in a special tank to hatch and rear. 
During the breeding process, we conducted repeated experiments while varying several factors, including the type of initial feed and the timing of feeding. The research revealed that copepods, a crustacean similar to shrimp, are an ideal food source during early larval development. This finding, and ongoing improvements in husbandry methods, led to the world’s first successful breeding of this species. 
Currently, the juvenile fish have reached 5 cm in length. They look similar to their parents, but are slightly taller and more rounded. The star-shaped spots (yellow to gold), which give the yellowspotted trevally its name, haven’t appeared on their sides yet, but dark bands are visible.
 
　At Okinawa Churaumi Aquarium, we will continue research to shed light on this species, as they are an essential aquatic resource, and to utilize this knowledge to contribute to the conservation and sustainable use of resources.