Titan triggerfish was created in 1801.
On averager they are somewhere around 13 inches. but some of been known to grow as long as 2 feet. *another answer* I encountered a titan triggerfish while snorkelling in Sharm El Sheikh Egypt, and it looked to be about half a metre long..I kept away from it as I know they are protective of their habitats, and they have nasty looking teeth :S
Lagoon triggerfish was created in 1758.
Triggerfish Twist was created in 2002.
Pinktail triggerfish was created in 1845.
Gilded triggerfish was created in 1832.
Black triggerfish was created in 1786.
Stone triggerfish was created in 1895.
Starry Triggerfish was created in 1801.
Grey triggerfish was created in 1789.
Clown triggerfish was created in 1801.
Halfmoon triggerfish was created in 1801.