The common river shark is a rare freshwater predator that lives in rivers and estuaries of northern Australia and New Guinea.
This shark differs from its marine relatives by its ability to live long in the fresh water of rivers. It is important for nature as the main predator that regulates the population of other fish.
estuary and delta
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Worker
Elders
Bro
birth time
Taxons
carnivore
if born as {name}
pursuit
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
Actively chases and captures mobile prey in open space.
g
age
t
When your next jubilee falls in {name} life years
Human
birth date
no permanent shelter
Close
mangrove
was
days
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
How old you would be if you lived as {name}
crustaceans
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.
My weight?
mollusks
small planktonic crustaceans — copepods, krill
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
adult
Maturity
mangrove forests along the seacoast
primary food sources
teeth
Potential Habitat
About health
marine coastal
When your next birthday would fall if you lived as {name}
d
In husbandry
On the go from 1.3 to 3.5 years. Forest mice, anoles, rainbow fish party on their birthday once a month
Sofa
Repro interval
results
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Body size
islands and part of Australia, many unusual animals and plants
Colors
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
Teeth color
live fish
No results found
all seas and oceans
Trophic type
Filters
Eyes color
On the map
lunge
all life stages
Female ♀
Body color
Upcoming birthdays
150 to 300 kilograms, 1.6 – 4 meters
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.
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
birth year
Maturity
Age (from birth to death)
sq mm
yr
Wanderers
How similar?
world of Australasia
Jubilee = every 10th birthday
Male ♂
until the celebration
baby / chick
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
Earliest developmental stage inside an egg or womb.
Business sausages
Young offspring still dependent on parental care.
zones of mixing fresh and sea water — river deltas, estuaries
Lifespan average
What do they eat?
Where do they live?
Marine world
Regeneration
Hard dental structures used to bite, tear, or scrape food.
What do they look like?
Maturity
emergence (insects)
end of lifespan
River estuary into the sea
Freshwater
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
fish
end of acceleration
Share
live snails, mussels, oysters
Duration
Find a pet...
Mature, fully developed individual capable of reproduction.
Fins color
Freshwater
saline marine habitat
This is me
Actively hunting and capturing live prey.
Gamers
where the river flows into the sea, slightly salty water, lots of fish and birds
Teeth count
Pets
How are they built?
all rivers and lakes
marine
shallow near the shore, water rises and falls, crabs live here
mm
Theoretical lifespan
ml
Stars
Link copied
coastal marine zone — shelf, neritic zone
My age?
wk
My size?
{name} jubilee
Asexual
swap
cm
Old-timers
Find an animal or breed...
active predation
turns
islands and part of Australia, many unusual animals and plants
Rabbits, falcons, red-eared turtles hang out for 6-9 years and party on their birthday four times a year
Rascals
Where do they take shelter?
Warm summer and lots of rain
celebrated their {n} birthday
When you would have been born if you lived as {name}
Littoral Zone
Litter size
Daddies
Lifespan maximum
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
world of Australasia
How to care for them?
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
river
°C
Not specified
Hermaphrodite ⚥
Where are they found?
Species lacks any fixed or lasting shelter structure.
embryo
all rivers and lakes
Length
kg
lots of rain, warm and pleasant summer
Rapid forward strike to seize prey.
Observations
◉{N} more on tap