Potamotrygonidae
Myliobatiformes
Chondrichthyes
It can last several months.
Among 1 and 8
They feed on other fish and aquatic invertebrates such as worms and crustaceans.
About 15 years.
This stripe, slightly oval in shape, has a black back with white dots. The tail is shorter than the length of the body and has several serrated spikes. At the end of it it has a dart or sting that it uses for defense. The snout is short, while the mouth is located in the ventral area and is slit-shaped.
Behind the head it has two spiracles (openings on the back), where water enters and subsequently exits through the gills after they absorb the dissolved oxygen.
Fertilization in this species is internal, once its development is completed, the female will give birth to a few fry that will feed during the first days of the yolk sac, that is, they are ovoviviparous.
This species is at serious risk of becoming extinct due to the contamination of its habitat by new and constant human settlements, agricultural fertilizers and poaching fishing.
In this species it is easy to differentiate males from females. Males have a pair of sexual appendages known as “hooks” that they use to inseminate the female during mating and are clearly visible.
