This shark is easily identified by the dark spot that it has on the point of its snout. It lives next to the coast on sandy, coral and coarse bottoms. Mating takes place during spring and fertilisation is internal. Later, the females give birth to between three and six fully formed young measuring about 50 cm, in estuaries and protected inlets.
The blacknose shark is commercially fished in large numbers in parts of its range. The major threat to this species is large removals as shrimp bycatch, specially during juvenile life history stages.
When the blacknose shark feels threatened it arches its back, with its head pointing up and its tail down, which seems to be an attempt to intimidate its enemies.