Reef safe blue fish (not a tang).

[Piscans]

just to clarify, bluefish (Pomatomus saltatrix) are Not, I repeat, NOT REEF SAFE

 

[OrionN]

how about these. Some/mostly blue. All are beautiful.

 

[TheBear78]

I've been almost overwhelmed with all of the blue options since posting this thread, but I thank you all nonetheless!
So many come with other issues such as dietary needs or possible aggression toward similar species that I need to spend some time studying them all.
There are too many to choose...

 

[Andreas' Reef]

I would definitley say that springeri damselfish are one of the most peaceful damselfish, I have one with a firefish and the firefish stays untouched. They may bicker in groups but they also look awesome in groups.

 

[Tired]

I still say a yellowtail blue or springeri damselfish is your best bet. Incredibly bright blue, shouldn't cause any trouble due to being added last, stays small, will eat whatever you feed it.

 

[SteveMM62Reef]

Not a Fish, but Blue Tuxedo Urchins.