Vertebrate fauna of SE Asia


SE Asia fauna ...  
 Large Mammals
 Small Mammals
 Mammal calls
 Lizards & Crocodilians
 Frog calls
Freshwater Fishes
 Marine & Brackish Fishes
Species Lists


SE Asia Vert Records (SEAVR) ...  
Philippines Records
  Indochina Records
  Indonesia & PNG Records
New Guinea herptiles ...  
Snakes   Lizards   Frogs  
  New or updated pages ...

Search this site ...




Links :
My wife, Sophia's website ... super-healthy, vegan delights :


Email :

Text and photos by Nick Baker, unless otherwise credited.
Copyright ゥ Ecology Asia 2023



Grey Knight Goby

Fig 1

Fig 2

Fig 3

Fig 4




Order : Perciformes
Species : Stigmatogobius sadanundio
Maximum Length : To at least 6.2 cm, possibly to 9.0 cm

The Grey Knight Goby inhabits tidal river estuaries, mangrove and the lower reaches of freshwater streams.

It is benthic in habits, sometimes occurring in water just a few centimetres deep. It is carnivorous, and feeds on fish fry, aquatic invertebrates and insect larvae.

Identifying features include the black spots on the flanks, which are arranged in broken rows parallel to the body, and the long first dorsal fin, which has a black blotch at the base. The second dorsal fin is shorter, but broader, than the first the anal fin is well developed, and the tail fin is relatively large and rounded. All fins, except the first dorsal fin, are speckled to some degree.

The species ranges from coastal areas of Pakistan eastwards through the Indian subcontinent and Sri Lanka. In Southeast Asia it occurs in the western half including Myanmar, Thailand, Cambodia, Peninsular Malaysia and Singapore. In Indonesia it occurs in coastal areas of Sumatra.

Fig 1 : Grey Knight Goby, in full sunlight, in the lowermost stretch of a freshwater stream flowing into Burau Bay, Langkawi, Peninsular Malaysia.

Fig 2 : Habitat of the Grey Knight Goby at Burau Bay - a shallow, rocky freshwater stream with sandy substrate.

Fig 3 : Specimen from Pulau Semakau, a partly mangrove-fringed island off Singapore.

Fig 4 : Mangrove habitat at Pulau Semakau, Singapore.

References : F1, F2