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Variable
fang-blenny
Petroscirtes variabilis
Family Blennidae
updated
Aug 10
Where
seen?
These small elongated fishes are sometimes encountered on our Southern
shores, among seagrasses. One was encountered hidden inside a large
snail shell.
Features: Up to 15cm long
but those seen were 5-7cm long. With an elongated body, a blunt squarish
snout. The lower jaw has a pair of long curved fangs. It lacks scales
and has a continuous dorsal fin along the body length which it holds
up rather handsomely when alarmed. Colours usually a dull olive green
with pale markings, some brighter green. It has a yellow underside.
There are six large irregular dark blotches along upper side. The
males are orange-brown while females are sea-green above and lighter
below.
What does it eat? According to
FishBase,
it eats mainly small crustaceans and occasionally nips off scales
from other fishes. According to Kuiter, it scrapes algae off broad
seagrasses.
Blenny babies: It lays adhesive
eggs.
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Cyrene Reef, May 08

Pulau Semakau, Dec 05
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Variable
fang-blennies on Singapore shores

Changi, Jul 07
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Tanah Merah, Sep 09
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Tanah Merah, Oct 09
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Pulau Hantu, Nov 03
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Pulau Pawai, Dec 09
Photo
shared by James Koh on his
flickr.
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Guarding
eggs laid inside a large shell.
Pulau Pawai, Dec 09
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