ID please

[macaw]

Bright Pink + Blue body, 1/2"

 

[Kahuna Tuna]

Looks like one of the spinecheeks.

 

[uberfugu]

Looks like a cardinalfish in the Apogon cyanosoma complex

 

[ObscurityKnocks]

I second spinecheek/whiptail, looks like Pentapodus Aureofasciatus - Blue Whiptail.

 

[macaw]

I hope it will not reach to a "Giant" in my reef-tank...

 

[ObscurityKnocks]

If I'm right on the ID they reach 8 ins. They will eat snails/crabs as well.