Amazon River Dolphin, today we will talk about some facts from Amazon river dolphins. Amazon river dolphin is a group of dolphins that live in the waters of South America, especially in the Amazon river. This type of dolphin is also called the “Pink River Dolphin” and also called “Boto”. These aquatic animals are very different types of animals with sea dolphins, amazon dolphins cannot survive in salt water. They are a herd of aquatic animals of the largest species of all types of water dolphins.
This Amazon river dolphin has pink to gray colors. These river dolphins are now widely kept in captivity such as in the United States, Venezuela, and in Europe. Here we see the facts about this Amazon river dolphin.
Characteristics of Amazon River Dolphin
This dolphin has a length of about 2 to meters with a weight that can reach 160 kg. The color of the skin varies because it depends on the age. Baby dolphins have dark gray skin on the back and light gray on the abdomen. As you get older, the color starts to blush, pink colors dominate the male dolphins more than females. The color will fade with the age of each.
Facts behind the eyes of the Amazon river dolphins. His eyes are small round in shape but have very sharp vision. One uniqueness in the Amazon river dolphins is having a long beak as in birds. Beak dolphins are very long and strong which is very useful for catching prey.
Amazon river dolphins are composed of 24 to 34 conical and molar-like teeth. While the fins are the same as those found in other dolphins. However, this type of dolphin does not have dorsal fins but its back will continue to grow as it ages.
Length of Life
Amazon river dolphins generally live for 33 years but when moved or cultivated in captivity their lives are shorter. This pink dolphin when in captivity lasts between 10 years and 30 years.
Pink dolphins are animals that inhabit the Amazon river but they also spread to other places such as the Orinoco river and Madeira river.
Also read: Amazon River Facts
Amazon’s Pink Dolphin Habitat
Amazon’s botos or pink dolphins like to inhabit areas with clear water, heavy flowing places, whitewater, clearwater and even live in blackwater rivers of the lowlands. In fact, they are freshwater mammals, besides living in rivers, they also sometimes inhabit lakes that are suitable for their habitat.
Grouping of Pink Dolphin Species
Here are three categories of pink dolphins according to the place they live in.
- Inia humboldtiana geoffrensis lives in Orinoco
- The Inia geoffrensis geoffrensis inhabits the Amazon river area
- Inia geoffrensis boliviensis inhabits Bolivian freshwater waters
How do Dolphins Behavior?
Speaking of the behavior of Amazon dolphins, they are friendly, and helpful (social beings) creatures. They have lived for centuries in the Amazon river and the tributaries. If you are lucky, maybe you can see them hanging around alone, but if they are in the middle of the season they will pair up. If they are in a dangerous condition, they will be found in groups of 10 to 15 birds. When sleeping, just like most other animals, where their eyes are closed.
Amazon river dolphins usually swim slowly and have the habit of swimming upside down and very rarely appear to jump on the water as sea dolphins. About why these dolphins swim upside down, not known with certainty but the possibility is that the bottom is closed (can’t see down) with large meat on the cheeks, so they swim in reverse.
What is the Food of Amazon Dolphins
Usually, his favorite food is fish, various types of healthy fish. There are about 50 types of fish they eat to sustain their lives.
Apart from fish, these pink dolphins also eat clams, crustaceans, crabs, and even small turtles.
How the Dolphin Sounds and Communication
Amazon dolphins not only use sonar (cannot be heard by humans) also use sound by whistling in communicating with other dolphins.
Mating on Amazon River Dolphins
Before mating, male dolphins first apply to female dolphins by bringing a twig or ball of soil above their mouth and approaching the female. The difference between males and females is evident in dolphins, where males have excess weight up to 16% or 55% compared to females.
These animals also forefly before mating and this has been recorded by researchers. Male dolphins will bite the fins of female dolphins. When the female does not receive the treatment, the male will act more aggressively.
Reproduction and Life Cycle on Amazon Dolphins
Boto or Amazon dolphins breed seasonally. Usually, they give birth to their children in the months of May to June in the summer. Usually, their childbirth coincides with a period of flooding, female dolphins prefer to live in areas of water than males. Flood areas have enough food sources to fulfill nutrition for the growth of dolphin children.
Boto dolphins take 11 months to 1 year for their pregnancy. When giving birth, if in captivity it takes between 4 to 5 hours. The size of a newborn dolphin child is around 31 inches. Dolphins need almost two years or almost 3 years to grow up and live without the need for care from their parents.
The period of breastfeeding the dolphin mother is very long so that the parent relationship with the child is also very intense. Male dolphins reach maturity or puberty when they reach two meters in size. While new female dolphins are ready to mate when the length reaches 2.7 meters.
Amazon River Dolphin Predator
Amazon native dolphins have several enemies that prey on them. Among them are anaconda, jaguar and caimans. In addition, humans sometimes hunt these mammals for the purpose of extracting their oil or skin and some people hunt these animals for exposure in an aquarium.
Interesting Amazon River Dolphin Facts
- Amazon dolphins are not easy to teach or become acrobats
- Amazon dolphins have no defense system at all, so if they are hunted by the enemy, they will definitely lose.
- Species of other river dolphins are the Indus River Dolphin, Chinese River Dolphin, Franciscana River Dolphin, and Ganges River Dolphin. This animal is extinct or almost extinct. Females are bigger than males.
- Historically, freshwater dolphins (rivers) have been saved by humans from local myths or legends who say that these types of dolphins have special powers and make their lives threatened.
- There is a dolphin from the Amazon river named Apure. He lived for 40 years in a German zoo.
- Botos dolphins (Amazon river dolphins) are not timid and often approach boats and cause them to often find wounds or enter into fishing nets.
- Among some species of dolphins, pink dolphins are the smartest. They have a brain larger than 40% of the human brain.
- Pink dolphins are known as predators of piranhas (Amazon ghosts).