are one of the smallest of all whales and dolphins.
They have compact little bodies with quite a triangular
dorsal fin which is often hook-shaped on top. The dorsal
fin sometimes has a patch on the tip where it has been
scraped on the seabed or river bed.
Their forehead (melon) is quite rounded and they have
a longish beak with up to 140 teeth.
Individual tucuxis and populations can differ quite
a lot in colour. They can be light to medium grey, bluish-grey,
or even brownish-grey on top, and pale grey, white or
pink underneath. Many of them actually grow paler as
they grow older.
They have large, broad flippers that are the same colour
as the top of their bodies.