What is the maximal age a Amazon river dolphin reaches?
An adult Amazon river dolphin (Inia geoffrensis) usually gets as old as 30 years.
Amazon river dolphins are around 314 days in the womb of their mother. When born, they weight 6.8 kg (14.99 lbs) and measure 2.5 cm (0′ 1″). As a member of the Platanistidae family (genus: Inia), their offspring is 1 babies per pregnancy. Fully grown, they reach a bodylength of 2.12 meter (7′ 0″).
As a reference: Usually, humans get as old as 100 years, with the average being around 75 years. After being carried in the belly of their mother for 280 days (40 weeks), they grow to an average size of 1.65m (5′ 5″) and weight in at 62 kg (137 lbs), which is obviously highly individual.
The Amazon river dolphin (Inia geoffrensis), also known as the boto, bufeo or pink river dolphin, is a species of toothed whale classified in the family Iniidae. Three subspecies are currently recognized: I. g. geoffrensis (Amazon river dolphin), I. g. boliviensis (Bolivian river dolphin) and I. g. humboldtiana (Orinoco river dolphin) while position of Araguaian river dolphin (I. araguaiaensis) within the clade is still unclear. The three subspecies are distributed in the Amazon basin, the upper Madeira River in Bolivia, and the Orinoco basin, respectively.The Amazon river dolphin is the largest species of river dolphin, with adult males reaching 185 kilograms (408 lb) in weight, and 2.5 metres (8.2 ft) in length. Adults acquire a pink color, more prominent in males, giving it its nickname “pink river dolphin”. Sexual dimorphism is very evident, with males measuring 16% longer and weighing 55% more than females. Like other toothed whales, they have a melon, an organ that is used for bio sonar. The dorsal fin, although short in height, is regarded as long, and the pectoral fins are also large. The fin size, unfused vertebrae, and its relative size allow for improved manoeuvrability when navigating flooded forests and capturing prey.They have one of the widest ranging diets among toothed whales, and feed on up to 53 different species of fish, such as croakers, catfish, tetras and piranhas. They also consume other animals such as river turtles and freshwater crabs.In 2008, this species was ranked by the International Union for Conservation of Nature (IUCN) as being data deficient, due to the uncertainty regarding its population trends and the impact of threats. While hunting is a major threat, in recent decades greater impacts on population have been due to the loss of habitat and inadvertent entanglement in fishing lines.It is the only species of river dolphin kept in captivity, mainly in Venezuela and Europe; however, it is difficult to train and a high mortality is seen among captive individuals.
Animals of the same family as a Amazon river dolphin
Not really brothers and sisters, but from the same biological family (Platanistidae):
- South Asian river dolphin becoming 28 years old
- Baiji with 1 babies per pregnancy
- South Asian river dolphin becoming 28 years old
- La Plata dolphin becoming 16 years old
Animals that reach the same age as Amazon river dolphin
With an average age of 30 years, Amazon river dolphin are in good companionship of the following animals:
- Linnaeus’s two-toed sloth usually reaching 27.75 years
- Guianan squirrel monkey usually reaching 27 years
- South Asian river dolphin usually reaching 28 years
- Indian flying fox usually reaching 31.33 years
- Grivet usually reaching 31.58 years
- Sunda slow loris usually reaching 26.5 years
- Red-shanked douc usually reaching 25 years
- Steller sea lion usually reaching 30 years
- Rough-toothed dolphin usually reaching 32 years
- Daubenton’s bat usually reaching 28 years
Animals with the same number of babies Amazon river dolphin
The same number of babies at once (1) are born by:
- South American sea lion
- Northern elephant seal
- Leschenault’s rousette
- Kolan vole
- Monjon
- African savanna hare
- Masoala fork-marked lemur
- Brazilian spiny tree-rat
- Natal long-fingered bat
- Pale-throated sloth
Weighting as much as Amazon river dolphin
A fully grown Amazon river dolphin reaches around 121.22 kg (267.23 lbs). So do these animals:
- Bornean bearded pig weighting 135.4 kilos (298.51 lbs) on average
- Northern right whale dolphin weighting 113 kilos (249.12 lbs) on average
- American black bear weighting 110.75 kilos (244.16 lbs) on average
- Atlantic humpback dolphin weighting 100 kilos (220.46 lbs) on average
- Harp seal weighting 132.25 kilos (291.56 lbs) on average
- Striped dolphin weighting 142.05 kilos (313.17 lbs) on average
- Western gorilla weighting 113.29 kilos (249.76 lbs) on average
- Siberian ibex weighting 130 kilos (286.6 lbs) on average
- Sloth bear weighting 99.45 kilos (219.25 lbs) on average
- Topi weighting 127.19 kilos (280.41 lbs) on average
Animals as big as a Amazon river dolphin
Those animals grow as big as a Amazon river dolphin:
- Baird’s tapir with 2.2 meter (7′ 3″)
- Harp seal with 1.73 meter (5′ 9″)
- Harp seal with 1.72 meter (5′ 8″)
- Nilgai with 2 meter (6′ 7″)
- Red deer with 2.14 meter (7′ 1″)
- Marsh deer with 1.72 meter (5′ 8″)
- Atlantic spotted dolphin with 2.13 meter (7′ 0″)
- Common tsessebe with 1.7 meter (5′ 7″)
- Bongo (antelope) with 2.27 meter (7′ 6″)
- Blue wildebeest with 2.01 meter (6′ 8″)