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The Ganges shark (Glyphis gangeticus) is a rare species of fresh water shark that dwells in the Ganges River.
Appearance
Appearance of a typical requiem shark. Stocky. Broadly rounded snout, with small eyes. First dorsal fin over the last third of the pectoral fins, with a free rear tip that is well in front of the pelvic fins. Second dorsal fin is much smaller than the first one but still relatively large. Anal fin is slightly smaller than the second dorsal fin. Pectoral fins broad and falcate. Longitudinal upper precaudal pit. No interdorsal ridge.
Coloration: Grey to brownish, no color pattern.
Distribution
Indo-Western Pacific: Hooghly River, Ganges River system, West Bengal, India. Possibly in the vicinity of Karachi in Pakistan too.
Biology
A little-known species, lives in freshwater, inshore marine and estuarine systems.
Feeding: Unknown.
Size: Maximum size probably up to 2 m.
Reproduction: Probably viviparous. Size at birth about 55 cm to 60 cm.
Similar species: Speartooth shark (Glyphis glyphis) that however has another distribution.
Endangerment
Highly endangered.
Danger to humans
Seems to be very dangerous, but this is not proven.
See also
Fish anatomy
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