This is just for fun. The only rule is: no researching. Just post your best (or worst) guess in the comments. Reading other people’s answers before posting your own is optional (but not recommended since there are almost always correct answers in there). Answer will be posted in the comments later today.
YesBiscuit! 
WOW.. Beautiful..
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If I remember right, it’s a Mandarin goby, or something like that.
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Fish, and that was without research or help from anyone? They’ re beautiful. I am looking forward to finding out what they are.
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Hippie fish. Get a job, you hippie fish!
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That’s the saltwater mandarin fish. Lovely little guys.
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Puffer of some sort?
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Gobi or goby. Not sure how to spell it.
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I believe it is a type of Goby. Don’t know which variety off the top of my head though.
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ANSWER TIME
This is a mandarinfish. From the Wiki entry:
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Mandarin Dragonette
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