A short snorkel on a healthy tropical coral reefs gives you the opportunity to see more vertebrates in a shorter time than any other ecosystem...
This is the largest group of vertebrates in the world.
Gymnothorax thyrsoideus, 'Black-faced Moray Eel'. This eel is reported to be found in shallow more turbid waters around coral reefs, including wrecks. Widespread through tropical Indo-Pacific.
Family Clupeidae: Herrings, Sardines
Herrings or 'sardines' often form huge schools.
Four species, the one below is commonly seen around tropical reefs in Indo-Pacific.
Fistularia commersonii, ‘Bluespotted Cornetfish'. Very widespread throughout the tropical Indo-Pacific, and has even snuck into the Mediterranean from the Red Sea through the opening of the Suez Canal (probably because it so skinny).
Aeoliscus strigatus, 'Razorfish'.
This family includes several dangerous species, including the "handsome, but deadly" lionfish and ugly, but still dangerous, stonefish
The striking colours and stripes are considered warning signs, and indeed when one approaches these fish they don't swim quickly away, but just turn at an angle and spread their fins out. They are covered in a total of 18 poisonous spines. These defences can cause many symptoms in humans, including pain and vomiting, and in extreme cases paralysis and heart failure. Deaths in healthy adults are rare, but fatalities can occur with small children and the elderly. All dozen species are native to the coral reefs of the tropical Indo-Pacific, although two species P. volitans and P. miles has been introduced to other waters such as the Caribbean and Mediterranean, where they are considered pests, and much research is being conducted on them in these areas.
Cephalopholis argus, 'Peacock Grouper', 'Argus Grouper'.
Anthias. This genus incudes some of the most delicately beautiful of coral reef fish. They are usually only seen on the drop offs and edges of fairly pristine coral reefs.
Includes the fast and predatory 'Trevally', known as 'Jacks' in the Americas.
Caranx ignobilis, 'Giant Trevally'.
Gnathanodon speciosus, 'Golden Trevally', 'Barred Trevally', being serviced by Cleaner Wrasse. Despite the first common name, they are only bright yellow when young, retaining the colour on the tips of fins and tail as they mature. And despite the second common name, the bars also fade as they age.
Plectorhinchus chaetodonoides, 'Many Spotted Sweetlips', 'Harlequin Sweetlips'. This is a juvenile pictured, and the juvenile of this species impersonates a toxic flatworm.
Lutjanus fulviflamma, 'Black-spot Snapper'.
Lutjanus gibbus, ‘Red Humpback Snapper’, ‘Paddletail Snapper’.
Goatfish have barbels that hang down from their 'chin'.
Mulloidichthys vanicolensis, 'Yellowfin Goatfish'.
Parupeneus cyclostomus, 'Blue Goatfish', 'Gold-saddle Goatfish'. May carry ciguatuera toxin. Very widespread around coral reefs across tropical Indo-Pacific, from Red Sea, south to South Africa, north to japan and Hawaii.
'Bullseye' or 'Bigeyes' are small and unusually shaped fish with huge eyes. They feed by night on zooplankton, then during the day they usually rest in schools underneath coral ledges.
Pempheris tominagai, 'African Silver Sweeper'?. Found in north-west Australia, western Indonesia, across Indian Ocean, Red Sea and to east African coast. (This is replaced by similar looking 'Silver Sweeper' Pempheris schwenkii along the rest of Australian coast, through Indonesia and to tropical Pacific).
Scarus scaber, 'Dusky-capped Parrotfish', 'Five-saddle Parrotfish'. Found between Indonesia across the Indian Ocean to the east coast of Africa.
Scarus spinus, 'Yellow/Gren-headed Parrotfish'. As suggested by the name, often has a bright yellow or lime green head that contrast with rest of body. Main body has blue-edged scales. Found around coral reefs in south-east Asia and northern Australia.
Cheilinus trilobatus, ‘Tripletail Wrasse’. Very variable in colour and pattern, and can change colour quickly when disturbed.
Thalassomma hardwicke, 'Six-Banded/Sixbar Wrasse'.
Thalassoma lutescens, 'Green Moon Wrasse', 'Blue-fin Wrasse', 'Yellow-brown Wrasse' and many other common names! Widespread and common on tropical coral reefs through Indo-Pacific.
Halichoeres melanurus, ‘Tail-spot Wrasse’, 'Hoevens Wrasse'. Found in tropical western Pacific, from Japan south to Great Barrier Reef.
Hemigymnus fasciatus, 'Thick-lipped Wrasse'.
Hemigymnus melapterus, 'Blackeye thicklip Wrasse', 'Half-half Wrasse'. Sifts though sand and then spits out, searching for invertebrates.
Coris gaimard, 'Yellowtail Coris', 'African Coris', 'Clown Wrasse'. Usually has yellow tail, blue spots and green stripes on head. Terminal Phase/males have pinkish head and yellow bar on side. Females have reddish body. Juveniles have reddish body with white spots, almost like a clownfish. Widespread; found on coral reefs across much of tropical Indo-Pacific, north to Japan.
Like Butterflyfish, Angelfish are also rather plate-shaped. However, they are more squarish in profile.
Pomacanthus sexstriatus, 'Sixband/Sixbar Angelfish'. Found in the central Indo-Pacific, from Sri Lanka, throughout south-east Asia north to Japan, across tropical Australia and east to New Caledonia.
Centropyge flavissima, 'Lemonpeel Angelfish'.
Pygoplites diacanthus , 'Regal Angelfish'.
There is only one species in this family.
Zanclus cornutus, 'Moorish idol'.
Zebrasoma veliferum, 'Sailfin Tang'.
Acanthurus triostegus, 'Convict Tang'. Widespread throughout tropical Indo-Pacific.
Melichthys vidua, 'Pink-tailed Triggerfish'.
Balistoides viridescens, 'Titan Triggerfish'. Large; largest triggerfish in Indo-Pacific (there is a larger species in far eastern Pacific). During nesting season the females get very aggressive and may charge and bite. One of these large football-shaped fish racing towards you is one of the scariest things on the coral reef!
Rhinecanthus rectangulus, 'Wedge-tail Triggerfish', 'Black-banded Triggerfish', 'Humuhumu'. This is one of the two fish in Hawaii known as Humuhumunukunnukuapua'a (triggerfish with snout like a pig) . It is the state fish of Hawaii. Found widely on coral reefs across the tropical Indo-Pacific.
Canthigaster valentini, 'Valentin's Sharpnose/Black Saddled Puffer/Toby'.
Arothron manilensis, ‘Narrowline Puffer’.
Ostracion meleagris, '(White) Spotted Boxfish'.