What Is This Fish!!!!!!!!!!

[jcon]

It is a Blue Acara.

Definitely not a Green Terror, the dorsal fin starts too far back from its head.

 

[Jason_S]

I say it's a cichlasoma ornatum. check out this video to compare...

http://www.youtube.com/watch?v=Fu8jpGlSRy4&videos=sYDdAWcutYg

 

[FishingOut]

Its a big male aequidens diadema.

 

[driftwood]

It could be some type of Port Cichlid. Its very pretty from what I can see.

 

[TheCanuck]

aequidens diadema is obviously right