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Glass Perchlets
   

Fig 1


Fig 2


Fig 3








 

 

 

 

 

 

 

 

Order : Perciformes
Family : AMBASSIDAE
Species : Ambassis spp.

Globally there are around 20 or so species of Glass Perchlet (or Glassfish) within the genus Ambassis, part of the family Ambassidae, around half of which occur in the waters of Southeast Asia.

These are small, translucent or semi-transparent fishes which occur in large shoals in a wide range of aquatic habitats including freshwater, brackish mangrove-lined inlets, coastal bays and offshore reefs.

Most species occurring in Southeast Asia reach a maximum size of less than 10 cm, apart from A. gymnocephalus which reaches up to 16 cm.

Glass Perchlets are omnivorous, feeding mainly on insects, crustaceans and other invertebrates : their mouths are turned upwards to facilitate feeding on floating prey. Their bodies are laterally compressed, and their eyes generally large.

The upper specimen shown here, which has not been identified to species level, was found in a shallow, sandy bay at Telok Paku, part of the Bako National Park, Sarawak, Borneo. The lower specimen is Kop's Glass Perchlet Ambassis kopsii from Singapore.


Fig 1 : Glass Perchlet feeding on floating debris in shallow, near-shore marine habitat at Telok Paku, Bako National Park, Sarawak, Borneo.

Fig 2 : View of sandy bay habitat at Telok Paku, Bako National Park, Sarawak, Borneo.

Fig 3 : Kop's Glass Perchlet in mangrove habitat at Pulau Semakau, Singapore.


References :
Fishbase.org