| 
        
          
            | 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. |  |  |