About
South Asian river dolphins behave differently than what you might expect. Often they travel alone and only surface for a quick breath, unlike more well-known species of dolphins who travel in large packs and jump out of the water. The muddy, sediment-filled waterways likely caused the South Asian river dolphin eyes to become smaller, which is a reason for their poor vision.
The South Asian river dolphins also differ physically than more well-known species. They do not have a prominent dorsal fin, but a more rounded dorsal fin and a long, narrow snout with razor sharp teeth. The South Asian river dolphins also have more neck-movement capabilities because of their lack of fused neck vertebrae. They are top predators in their ecosystems and their diet consists mainly of catfish and carp, though they eat many other kinds of fish as well. They play a big role in keeping fish populations proportional.