Glyphis gangeticus

Characteristic features:

Colour:

Grey on dorsal surface of sides of head, trunk, and tail, shading to paler grey on the flanks, abruptly white on lateral and ventral surfaces and lower base of caudal fin; waterline (demarcation of dark dorsal and pale ventral colours) diffuse, extending below eye on head

Size:

Maximum size up to 204 cm TL; birth size 56–61 cm TL.

Distribution:

Found throughout the tropical Indo–West Pacific.

Habitat:

Occurs in fresh and brackish waters, such as large rivers and muddy estuaries.

Biology:

Probably feeds on fish and also stingrays. Length at maturity is estimated at about 178 cm TL (Compagno 2005). Reproductive mode is viviparous.

Similar species:

Carcharhinus leucas
Bullshark

Carcharhinus leucas differs in having a much shorter second dorsal fin, with the first dorsal-fin height up to 3 times 2nd dorsal-fin height (vs. first dorsal-fin height twice 2^nd dorsal-fin height); precaudal pits transverse, deep and crescentic (vs. longitudinal and relatively shallow).

to Carcharhinus leucas

Negaprion acutidens
Sicklefin lemon shark

Negaprion acutidens differs in having a second dorsal fin nearly as large as first dorsal fin (vs. second dorsal fin smaller than first dorsal fin).

to Negaprion acutidens

Lamiopsis tephrodes
Borneo broadfin shark

Lamiopsis tephrodes differs in having a second dorsal fin nearly as large as first dorsal fin (vs. second dorsal fin smaller than first dorsal fin) and snout moderately long and narrowly rounded, when viewed from underneath (vs. snout short and bluntly rounded).

to Lamiopsis tephrodes

FishBase
The IUCN Red List of Threatened Species^TM