Pseudocheilinus ocellatus
Encyclopedia
Pseudocheilinus ocellatus is a Wrasse
Wrasse
The wrasses are a family, Labridae, of marine fish, many of which are brightly colored. The family is large and diverse, with over 600 species in 82 genera, which are divided into nine subgroups or tribes....

 from the Western Central Pacific. It occasionally makes its way into the aquarium trade (where it is apparently marketed as "the mystery wrasse"). It grows to a size of 10.3 cm in length.
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