Bearded
mudskipper
Scartelaos histophorus
Family Gobiidae
updated
Sep 2020
Where
seen? This long leaping
mudskipper has so far only be seen at Pasir Ris and Chek Jawa. Its preferred
habitat is soft liquid mud where it often squirms rapidly in a snake-like
manner. According
to FishBase it is intertidal and found on sand and mud flats along
bay shores. Also in estuarine areas, swamps, marshy areas and on tidal
mud flats. It actively shuttles back and forth between rock pools
and air.
Features: To about 14cm long,
those seen about 7-10cm. Scales are tiny and partly embedded and thus
not visible with the naked eye. The skin on the top of the head and
on the back is full of blood vessels allowing the fish to respire
through the skin. The first dorsal fin is tall and mast-like. Tail fin quite large and long. |
Tall mast-like
dorsal fin raised when creeping.
Chek Jawa,
Dec 09 |
Pasir Ris Park, Jul 09 |
When leaping, second dorsal fin is raised,
but tall first dorsal fin is not.
Chek Jawa, Apr 12 |
'Stands' on its tail when it leaps..
Chek Jawa, Dec 09 |
Leaping lovers: The fish does display its tall mast-like dorsal fin when it is creeping about on the ground. But the spectacular behavious is when it leaps 'on the spot', hurling itself
almost vertically and for a brief moment, standing on its tail! This
is believed to be part of the courtship ritual of the male mudskipper!
As it leaps, it spreads out its pectoral fins, and its second dorsal fin. The tall, mast-like first dorsal fin is not raised
when leaping. One fish has also been seen raising its tail fin, first and second dorsal fin when horizontal, next to another fish. |
Chek Jawa, Jan 10
Photo
shared by James Koh on flickr. |
A pair emerging
from a narrow burrow
that opens sideways into a pool.
Chek Jawa, Mar 11 |
Burrowing behaviour: It appears to build a burrow that opens sideways into a pool of water.
What does it eat? It eats tiny
bottom dwelling creatures such as diatoms, ostracods, copepods and
worms. |
Bearded
mudskippers on Singapore shores |
Other sightings on Singapore shores |
Pasir Ris, Dec 08
Photo
shared by Loh Kok Sheng on his
blog. |
Pasir Ris,
Mar 09
Photo
shared by Loh Kok Sheng on his
blog. |
|
Chek Jawa, Jan 10
Photo
shared by James Koh on flickr.
|
|
Links
References
- Larson, Helen
K and Kelvin K. P. Lim. 2005. A
Guide to Gobies of Singapore. Singapore Science Centre.
164pp.
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