The Illyrian squalius is a freshwater fish of the carp family. It lives in rivers and streams of the Balkan Peninsula and feeds on both plants and small animals.
The Illyrian squalius differs from related species by its unique scale pattern and head shape. It is important for nature because it serves as food for predatory fish and birds and helps maintain balance in river ecosystems.
Immature form that undergoes metamorphosis before adulthood.
Worker
birth time
bottom
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 cold, short summer, almost no trees, lots of moss
days
Warm summer
worms
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.
small planktonic crustaceans — copepods, krill
adult
Maturity
fish of small size
South and Central America, hot and humid, huge forests
Fins count
About health
When your next birthday would fall if you lived as {name}
Repro interval
results
summer warm, winter not very cold
Colors
Sex
Upcoming jubilees
Gremllins
mo
Trophic type
Filters
small fish
Palearctic realm
Upcoming birthdays
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Height
insect larvae and caterpillars
Age (from birth to death)
Foraging occurs on the floor of aquatic or terrestrial habitats.
most of Europe and Asia, various forests, steppes and tundra
Wanderers
algae
Jubilee = every 10th birthday
Tundra
Earliest developmental stage inside an egg or womb.
Business sausages
Scales count
Lifespan average
Regeneration
What do they look like?
Maturity
emergence (insects)
end of lifespan
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
end of acceleration
Share
Find a pet...
Mature, fully developed individual capable of reproduction.
Freshwater
Egg count
Actively hunting and capturing live prey.
where the river flows into the sea, slightly salty water, lots of fish and birds
65 to 130 grams, 25 – 60 centimeters
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
Dorsal fin count
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
Actively searching habitats to locate food items.
Egg color
Where are they found?
Species lacks any fixed or lasting shelter structure.
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
Elders
Bro
Taxons
if born as {name}
omnivore
age
birth date
swimming
no permanent shelter
Palearctic realm
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?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
Mouth size
primary food sources
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
Body size
aquatic
{name} birthday
live annelid worms
No results found
On the map
lunge
Female ♀
all life stages
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
from birth to adulthood
What do they eat?
insect larvae
Where do they live?
Immature individual that has not yet reached reproductive maturity.
early young
River estuary into the sea
Freshwater
Temperate mixed forest
Duration
This is me
most of Europe and Asia, various forests, steppes and tundra
stream
freshwater
Gamers
aquatic plants and algae
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
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?
Warm summer and lots of rain
celebrated their {n} birthday
When you would have been born if you lived as {name}
Daddies
Lifespan maximum
foraging
river
Hermaphrodite ⚥
embryo
Carrot
summer warm, many oaks, birches, maples
Length
kg
lots of rain, warm and pleasant summer
Rapid forward strike to seize prey.
Observations
◉{N} more on tap