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.

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

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

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

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

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

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

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

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

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)

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)

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

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

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

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

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

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

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

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

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

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

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

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)

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

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

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)

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

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

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

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.

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)

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

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.

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

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

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

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

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

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

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