The Mandarinfish, or Mandarin Dragonet. This picture is the first of a series I'm going to do courtesy of Lucy Harrison, a PhD candidate here at SFU who gets to do field work in Saipan. I am very jealous. If I get her permission, I'll post some of her non-fish pictures.
These guys are frickin' crazy. The evolutionary geneticist in me (he's rather large and insistent) keeps asking many questions every time I look at these pics. How much variation is there in colour patterns within this species? How many populations are there? Do they show sexual dimorphism? Mostly, just, WTF? Highly cool.
Here are two more pictures: