Need help to identify some fish

[sleepy867]

HI,
I went snorkeling two weeks ago on the Pacific Coast of Costa Rica and took a couple of pictures. It would be great if someone could help me out identifying the different kind of fish in the pictures (see attached files)
Thanks for your help.

 

[05xrunner]

fist one is an Angle of some sort..Not into them so i dont know what they are
2nd one looks like a Sgt major damsel
3rd is a puffer of some sort
4th looks like another sgt major but dont think it is

 

[nereef]

first angel is the king or passer (Holacanthus passer). 2nd and 4th are a type of sgt major (there's an entire genus of them); it looks like Abudefduf vaigiensis to me. not for sure on the third one, it could be a trigger or puffer.