Bony Fish; Osteichthyes

The bony fish all possess some sort of a hard, calcium carbonate skeleton. However they come in a tremendous variety of shapes, sizes, colours and locomotive techniques – to name only a few of their numerous characteristics.

Eels; order Anguilliformes

“Fishes with long, snake-like bodies”. They are not often seen out in open water, whether they're big or small. (7 Galleries)

Frogfish; Antennariidae

A type of anglerfish that prefers to walk rather than swim. Only photographed around Chaloklum Bay so far, in 2012 and 2014.

Seahorse, Pipe and Razorfish; Syngnathiformes

Named after their long tuberculate snouts; they have elongate bodies encased in bony, ringed, body segments. They are shy, beautiful, delicate creatures. (6 Galleries)

Soldier and Squirrelfish; Holocentridae

Hiding close to the reef by day; out feeding by night.

Longtom and Garfish; Belonidae

Crocodile longtom are often seen from the boat when they leap out of the water and bounce along the surface to escape threat.

Scorpion, Lion and Stonefish; Scorpaenoidei

Some of our few venomous fish; most of them would still rather swim away than poison you ! (5 Galleries)

Flatheads; Platycephalidae

"Inhabits sandy bottoms" which could be a good reason to keep your own clean. (2 Galleries)

Grouper and Soapfish; Serranidae

Also known as Rockcod, they have strong, stout bodies and rather large mouths, containing more than 1 row of teeth. (16 Galleries)

Cardinalfish; Apogonidae

Small fish, named after their typical red colouration (Cardinals wear red), although ours seem more of a golden shade. Their large eyes suggest their nocturnal feeding habits. (10 Galleries)

Trevally, Queenfish, Scad and Pompano; Carangidae

Marine fishes from the Atlantic, Indian and Pacific Oceans. They are mainly fast, hunting fishes, hanging out in the waters around reefs and in open sea. (1 Album and 2 Galleries)

Snapper; Lutjanidae

Medium sized fish with triangular shaped heads, shallow notched tails and a continuous dorsal fin. (7 Galleries)

Sweetlip; Haemulidae

Big lipped fishies; the juvenile forms are quite different from the adult. (3 Galleries)

Emperor and Seabream; Lethrinidae

These are medium sized fishes, often confused with the Snappers and the Sweetlips. (4 Galleries)

Fusilier; Caesionidae

Again closely related to the Snappers, they are usually schooling fish, feeding on zooplankton. (4 Galleries)

Monocle and Threadfin Bream; Nemipteridae

Also known as the whiptail breams or the false snappers. Found in the Indian and western Pacific Oceans. (7 Galleries)

Goatfish; Mullidae

With 2 distinct barbels next to the mouth that they use for sensing food under the sand. (3 Galleries)

Batfish; Ephippididae

Also known as Spadefish. Their juvenile forms are always interesting - the adults often hard to tell apart. (5 Galleries)

Banner, Butterfly and Coral Fish; Chaetodontidae

Relatively small, colourful fish, much loved by divers and snorkellers. (8 Galleries)

Angelfish; Pomacanthidae

Closely related to the Butterflyfish but larger and with a spine on their lower gill covers. (3 Galleries)

Damsels, Anemonefish and Seargeant Majors; Pomacentridae

A large family of small, busy, reef-dwelling fish with fairly diverse habits. (3 Albums, 1 Gallery)

Barracuda and Mullet; Mugiloidei

Both of these contrasting families of fish are commonly encountered in our waters. (5 Galleries)

Wrasse and Tuskfish; Labridae

Closely related to the Parrotfish, this numerous family also swim using their pectoral fins. Usually brightly coloured and able to change sex when they need. (18 Galleries)

Blennies; Blenniidae

Small bottom dwelling fish with long, continuous dorsal fins and a habit of resting with curved bodies. (6 Galleries)

Dragonets; Callionymidae

The Blue-spotted, Short-snout, and the more common Fingered Dragonet - more sandy bottom dwellers.

Parrotfish; Scaridae

Everyone's favourite coral reef fish. Differing from Wrasse in having fused teeth which they use to scrape and crunch algae off corals. (4 Galleries)

Dart Gobies; Microdesmidae

Also known as Dartfish, they are not actually real Gobies. If things get nasty they use other creatures burrows to hide in.

Gobies; Gobiidae

Our largest family of fish; they are mainly bottom dwelling, feeding on small crustaceans and the like. (1 Sub-album and 11 Galleries)

Triplefins; Tripterygiidae

Small, cryptic, blenny-like creatures - correct identifications not guaranteed.

Surgeon and Unicornfish; Acanthuridae

A common feature of these fish are the sharp blades on either side of the base of the tail. They can slash other fishes by a rapid side sweep of the tail.

Rabbitfish; Siganidae

Named after their herbaceous diet (or maybe a facial resemblance), these fish have poisonous dorsal, ventral and anal spines. They are also known as Spinefeet (or a Spinefoot). (8 Galleries)

Tuna and Mackerel; Scombridae

Sleek, silvery, pelagic fish that look similar to, but are not relations of the Trevally family.

Flatfish; Pleuronectiformes

4 Flounders and 1 Sole. These fish have adapted to live on their sides; most flounders have both eyes on the left side of their bodies, soles on the right.

Filefish; Monacanthidae

Aka leatherjacket due to their tough skin. Closely related to Triggerfish but more laterally compressed and not so much fun for divers! (7 Galleries)

Triggerfish; Balistidae

Small mouth and strong jaws. Scuba divers learn not mess with the titan trigger in the nesting season; they are seriously territorial. (2 Galleries)

Box and Cowfish; Ostraciidae

Small fish with a square-ish bony carapace. (2 Galleries)

Pufferfish; Tetraodontidae

Named after their ability to inflate their stomachs with water, so as to become too big to be swallowed. (3 Galleries)

Porcupinefish; Diodontidae

Like Pufferfish but with spines, making it unpleasant as well as difficult to swallow them. (2 Galleries)

Miscellaneous Fish

One-off fish that don't fit in anywhere else. (16 Galleries)

Mixed Marine Fish photos

A variety of photos featuring 2 or more species of typical Koh Phangan marine fish.