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Project Noah Nature School
Thalassoma lunare
Its length is up to 30 centimeters, although they tend to average about 25. Juveniles are blue on the lower half of the body. They have a black spot in the middle of the dorsal fin and a black blotch on the caudal fin base. As they mature, the spot turns into a yellow crescent, hence the name. The body is green, with prominently marked scales. Coloration of the head ranges from blue to magenta, with a broken checkerboard pattern.
MacKay Reef, Great Barrier Reef, Queensland.
This fish is in the lower left-hand corner of the first photo. Any ideas on the blue-spotted fish, anyone?
Spotted on Sep 5, 2010
Submitted on Jun 20, 2011
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