Aspect: | Brown, brown-white moiré, but also light blue, but whatever the colour of the body always sports a blue anal fin and a blue tail blade, bot no vertical body bars. A distinct feature are its blue eyebrows. |
Population: | Regularly abundant. |
Notable feature: | Defends itself by swift tail movements to cut aggressor with its tail scalpel blades, reputed to be able to cut through a 5mm suit. |
Environment: | Usually found in shallow, quiet waters (but also abundant on well-covered wrecks down to 40 metres), hovering over rocks or coral boulders in search of algae. Solitary or in schools mixing with other surgeonfishes. |
Behaviour: | Will usually swim away when approached closer than two metres. |
Aspect: | Outline very similar to that of Banded Butterflyfish, with similar mid-body scale pattern, but band across the tail is light grey, and while retains black bar across head and eye, features a yellowish head and snout while a white-crowned black "eye" adorns the rear body. |
Population: | Regularly abundant. |
Notable feature: | Seldom keeps still, unless caught whilst grazing algae on a rock. |
Environment: | Usually found in shallow, quiet waters, (but also found on well-populated wrecks down to 40 metres) hovering over rocks or coral boulders in search of algae. |
Behaviour: | Will usually swim away when approached closer than two metres. |
Aspect: | More commonly blue with darker vertical body bars, but when displays brown tones, with darker brown vertical bars, always has blue-tone anal fin (often white edged), and vertical darker bars. Tail “surgery” blades also remain dark blue. Sunshine-like “make-up” around eyes. |
Population: | Regularly abundant. |
Notable feature: | Defends itself by swift tail movements to cut aggressor with its tail blades (always blue contrary to Blue Tang), reputed to be able to cut through a 5mm suit. |
Environment: | Usually found in shallow, quiet waters, (but also abundant on well-covered wrecks down to 40 metres) hovering over rocks or coral boulders in search of algae. Solitary or in schools mixing with other surgeonfishes. |
Behaviour: | Will usually swim away when approached closer than two metres. |
Aspect: | White-silvery body with light marked mid-body horizontal lines, and four heavy black vertical bars - one running across the eyes, two larger ones mid-body and a fourth running through the base of the tail. Upper snout area also features a blue and yellow moiré pattern. |
Population: | Regularly abundant. |
Notable feature: | Tail, together with the dorsal and anal fins are black but contoured with a thinner white line, itself finishing with a transucent membrane. |
Environment: | Usually found in relatively shallow, quiet waters, nibbling at algae on rocks and boulders. |
Behaviour: | Will remain quiet if approached smoothly, particularly when busy feeding. |
Aspect: | Generally blue, can vary from very pale blue, through light brown, to dark blue, but always displays a yellow tail blade. Juvenile almost fluorescent yellow overall, then progressively starts to acquire blue tint from the fringe of its fins inwards (see photographs below). |
Population: | Regularly abundant. |
Notable feature: | Defends itself by swift tail movements to cut aggressor with its tail blades (always yellow contrary to Doctorfish and Ocean Surgeonfish), reputed to be able to cut through a 5mm suit. |
Environment: | Usually found in shallow, quiet waters, (but also abundant on well-covered wrecks down to 40 metres) hovering over rocks or coral boulders in search of algae. Solitary or in schools mixing with other surgeonfishes. |
Behaviour: | Will usually swim away when approached closer than two metres. |