Fast open-water hunters that come in over the reef rather than living on it: trevallies, jacks, barracuda, mackerel, tuna and the amberjacks. A silver fish moving quickly, in a school or in ones and twos.
They are seen on the reef edge, over a pinnacle, at a channel mouth, or where a current runs, because that is where their prey is. A stationary diver on the edge sees more of them than a swimming one, and they will come to look.
Several hunt by cooperating. A group of trevally will push a bait ball against the surface or against a wall, and some species change colour markedly while hunting so the rest of the group can see them.
The barracuda's reputation is out of proportion. A large solitary one hangs motionless watching a diver, which is unnerving and is all it does. The recorded incidents involve speared fish or bright metal in murky water.
Every one has a page. They are shown as a list rather than as pictures because nothing has been photographed or logged for them yet, and a species with nothing behind it should not sit in front of one that has.
How many of the 29 carry a record at each destination. A species usually carries several, so these do not add up to 29.
All 1316 species in one index, with filters for destination, rarity and hazard.