I think redfang triggerfish (Odonus niger, also called red toothed triggerfish) are ridiculously beautiful, and I love to find myself near a group of them while on a dive. They have bodies in graduated shades of blue that are big enough to see, and red teeth (that can be quite hard to see).
[youtube=”https://www.youtube.com/watch?v=eT1RbfGgR8c&w=540″]
They sometimes aggregate in mid water to feed on plankton, as they are doing in this video. You can also see divers – Otti and Matthijs – enjoying the beautiful coral reef and lovely visibility. This was filmed at Chains, a dive site on Two Mile Reef in Sodwana.