Vertebrate fauna of SE Asia
  

 

Home  
覧覧覧覧覧  
SE Asia fauna ...  
   
Primates
 Carnivorans
 Large Mammals
 Small Mammals
 Mammal calls
 Bats
覧覧
Birds
覧覧
 Snakes
 Lizards & Crocodilians
 Turtles
覧覧
 Amphibians
 Tadpoles
 Frog calls
覧覧
Freshwater Fishes
 Marine & Brackish Fishes
覧覧
Species Lists
 





 


 
覧覧覧覧覧  
Vertebrate records ...  
   
SE Asia Records (SEAVR)
 Indochina Records
 Philippines Records
 Indonesia & PNG Records
 
覧覧覧覧覧  
New Guinea herptiles ...  
Snakes   Lizards   Frogs  
覧覧覧覧覧  
   
  New pages ...
 
 
     
 
     
 
     
 
覧覧覧覧覧  
 

Search this site ...

 
 


   

 
  覧覧覧覧覧  
  Email :


Text and photos by Nick Baker, unless otherwise credited.
Copyright ゥ Ecology Asia 2020

 
 
     
   
   

 

   
   
 
Blackspot Sergeant
   

Fig 1
 


Fig 2
 


Fig 3
 

 

 

 


 

Order : Uncertain
Family : POMACENTRIDAE
Species : Abudefduf sordidus
Maximum Length : 24 cm

According to Fishbase, the Blackspot Sergeant Abudefduf sordidus occurs in tropical, shallow lagoons, reef flats and sometimes brackish waters in depths of 3 metres or less. It may be solitary or may form small schools.

It is similar in appearance to the Banded Sergeant Abudefduf septemfasciatus in that it possesses 7 grey, vertical bars on its flanks, but it can be distinguished from the former by the presence of a well-defined black spot on top of the base of the tail.

Some Abudefduf species are well known for their vocalisations, which can easily be heard by scuba divers. The various sounds that the Blackspot Sergeant emits have been studied in great detail by Lobel & Kerr (1999) who grouped their vocalisations into four groups - 'courtship', 'agonistic chase', 'agonistic pre-chase' and 'startle'. The frequency of these sounds ranges up to 8 kHz. 

This species ranges from the Red Sea and East Africa through the Indian Ocean and Southeast Asia to the western and central Pacific Ocean.



Figs 1 to 3 : Examples from French Polynesia, in the central Pacific Ocean, inhabiting a shallow, sandy lagoon.


References : F3

Lobel, P. S. & Kerr, L. M. (1999). Courtship sounds of the Pacific damselfish, Abudefduf sordidus (Pomacentridae). The Biological Bulletin, 197(2), 242-244.


Links :

Fishbase