Arapaima gigas is one of the largest freshwater fish in the world. It lives in the Amazon basin and breathes atmospheric air.
The arapaima differs by its enormous size and its ability to breathe air using a special organ. As the main predator, it regulates the number of other fish in the rivers of Amazonia.
Grabs prey with a large mouth during hunting at the surface or in the water column.
Immature form that undergoes metamorphosis before adulthood.
Worker
birth time
Dogs, dolphins, lynx hang out for 9-25 years and party on their birthday three times a year
m
Map
will celebrate their {n} birthday
g
t
When your next jubilee falls in {name} life years
Human
very hot and very humid all year round, rain almost every day
days
South and Central America, hot and humid, huge forests
How old you would be if you lived as {name}
Theoretical maximum lifespan estimated from the Dynamic Energy Budget (DEB) mathematical model. This value reflects a biological potential derived from metabolic parameters, not from direct observation — real recorded lifespans are often significantly shorter.
adult
Maturity
South and Central America, hot and humid, huge forests
invertebrates
About health
When your next birthday would fall if you lived as {name}
Motorcycle
Repro interval
results
Colors
Sex
Upcoming jubilees
Gremllins
mo
live fish
Trophic type
all living animals without backbone
Filters
always hot and humid, huge trees and vines
Upcoming birthdays
standing fresh waters — lakes, ponds, oxbow lakes
Breeding structure built or used for laying eggs and raising offspring.
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Age (juvenile)
Age (from birth to death)
Age (embryo)
Wanderers
Food items are collected from exposed outer surfaces of substrates.
Jubilee = every 10th birthday
Earliest developmental stage inside an egg or womb.
Business sausages
Scales count
Lifespan average
young after fast growth
Regeneration
Juvenile stage following larval metamorphosis but not yet adult.
What do they look like?
Maturity
emergence (insects)
end of lifespan
birds
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
fish
end of acceleration
Share
swampy freshwater biotopes — peat bogs, marshes, river mangroves
Find a pet...
Mature, fully developed individual capable of reproduction.
Freshwater
Actively hunting and capturing live prey.
Pets
all rivers and lakes
Primary oral structure used to seize, manipulate, or ingest food.
{name} jubilee
cm
Old-timers
Find an animal or breed...
mouth
turns
Rascals
hot Africa south of the desert, many savannas and forests
Litter size
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
How to care for them?
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
°C
Not specified
Where are they found?
all rivers and lakes
Locomotion through water employed while searching for or capturing prey.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Tropical moist forest
Elders
Bro
lakes and ponds
freshwater marsh and wetlands
Taxons
carnivore
rivers and streams
if born as {name}
age
birth date
Head size
small mammals — mice, shrews, bats
swimming
Close
water column
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
Neotropical realm
My weight?
74 to 150 kilograms, 1.4 – 3 meters
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
surface
primary food sources
Neotropical realm
Potential Habitat
d
In husbandry
Feeds while suspended in open water between surface and bottom.
On the go from 1.3 to 3.5 years. Forest mice, anoles, rainbow fish party on their birthday once a month
Feeding occurs in water bodies such as rivers, lakes, or oceans.
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Gestation
Body size
aquatic
small mammals
{name} birthday
No results found
live birds
Yolk sac size
On the map
lunge
all life stages
Female ♀
Body color
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
Potential habitat modelled from GBIF occurrence data. Map © Zveriki.com, licensed under CC BY 4.0.
birth year
Maturity
sq mm
yr
How similar?
Male ♂
until the celebration
age as {name}
How do they breed?
On the go from 3.5 to 6 years. Hedgehogs, crows, lizards treat themselves to birthday snacks 6 times a year
What if eaten?
Neither
nest
What do they eat?
Where do they live?
from birth to death
early young
world of Afrotropics
Freshwater
Scales size
Duration
Fins color
Always hot and wet
This is me
freshwater
Gamers
How are they built?
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
Scales color
Asexual
swap
freshwater environment — rivers, lakes, ponds, swamps
active predation
Modified swim bladder temp
Rabbits, falcons, red-eared turtles hang out for 6-9 years and party on their birthday four times a year
Where do they take shelter?
celebrated their {n} birthday
When you would have been born if you lived as {name}
flowing fresh waters — rivers, streams, mountain torrents
Daddies
Lifespan maximum
whole life
Hermaphrodite ⚥
embryo
Length
kg
Rapid forward strike to seize prey.
Observations
◉{N} more on tap