| Phylum Chordata
> Subphylum Vertebrata > fishes |
Flatheads
Family Platycephalidae
updated
Nov 08
Where
seen? Like a cross between a crocodile and a fish, flatheads
are often encountered on our shores. In coral rubble areas as well
as sandy areas and seagrass meadows. Although large, flatheads are
usually overlooked as they blend in with their surroundings and are
sometimes half buried in the sand.
What are flatheads? Flatheads belong to the Family Platychephalidae.
According to FishBase:
the family has 18 genera and 60 species. They are found in the Indo-Pacific
oceans.
Features:
6-25cm
long. Some species can grow up to 1m long! The broad, flattened head
gives rise to the family's scientific name: 'Platys' means flat and
'kephale' means head in Greek. The snout is long and mouth huge; with
the lower jaw slightly longer than the upper jaw. The head has bony
ridges and some species have spines. Some species have elaborate tentacles
over the eyes. The long body is cylindrical and tapers towards the
tail. Spending most of the time on the sea bottom, most species lack
swim bladders.
Flatheads often lie buried in sandy or muddy bottoms, sometimes with
only their eyes sticking out. Together with their camouflaged patterns,
they are hard to detect.
Sometimes mistaken for some flat-headed
sand-dwelling dragonets
(Family Callionymidae). Here's more on how
to tell apart fishes with flat heads.
What do they eat? Flatheads eat
small fishes, octopus and cuttlefish, crustaceans and other animals
that live on the bottom. Their large, long mouths expand into a huge
funnel to suck up prey. They have vomerine teeth (bumps on the roof
of the mouth) to help grip and swallow prey.
Human uses: Some large species
of flatheads are considered good eating. They are caught by seining
and trawling. The Bartail flathead (Platycephalus indicus)
is commercially cultured in Japan for the table and is also used in
Chinese traditional medicine.
Status and threats: Our flatheads
are not listed among the threatened animals of Singapore. However,
like other
creatures of the intertidal zone, they are affected by human activities
such as reclamation and pollution. Overfishing can also have an impact
on local populations. |

Sentosa, Jul 07

This
one lunged and caught another fish.

A
bright yellow one!
Chek Jawa, Mar 04
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East Coast, Nov 08
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Disappearing into the sand.
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Family
Platycephalidae recorded for Singapore
from
Wee Y.C. and Peter K. L. Ng. 1994. A First Look at Biodiversity
in Singapore.
*from Lim, Kelvin K. P. & Jeffrey K. Y. Low, 1998. A Guide to the
Common Marine Fishes of Singapore.
in red are those listed among the threatened
animals of Singapore from Ng, P. K. L. & Y. C. Wee, 1994.
The Singapore Red Data Book: Threatened Plants and Animals of Singapore.
| |
Flatheads
seen awaiting identification
Species
are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience
of display.
Single lid over the eye
Keyhole eyelids |
| |
Cocius
crocodilus
Platycephalus bataviensis
Platycephalus bosschei
Platycephalus cantori
Platycephalus carbunculus
Platycephalus crocodilus
Platycephalus indicus (Bartail flathead)
Platycephalus isacanthus
Platycephalus malabaricus
Platycephalus/*Cymbacephalus nematophthalmus
(Fringe-eyed flathead)
Platycephalus polyon
Platycephalus pristiger
Platycephalus scaber
Platycephalus sundaicus
Platycephalus tuberculatus |
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