Cobitis vardarensis is a small bottom-dwelling fish from the loach family. It lives in rivers and streams of the Vardar basin in Northern Macedonia and Greece.
Cobitis vardarensis differs from other spined loaches by a special pattern on the body and the shape of the suborbital spine. The fish is important for the river ecosystem: it processes detritus and serves as food for predatory fish.
Searches for food using antennae and sucks it in with its mouth.
Immature form that undergoes metamorphosis before adulthood.
Worker
birth time
Describes the act of excavating soil or substrate to locate or access food.
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
detritus, eat dead remains of plants, animals and all kinds of organic debris on the bottom
days
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
whiskers
Captures food by straining water or substrate through specialized structures.
adult
Maturity
organic debris
About health
When your next birthday would fall if you lived as {name}
Repro interval
results
Colors
Sex
Upcoming jubilees
Gremllins
mo
detritivore
Uses an excavated underground tunnel or chamber for refuge or nesting.
Subocular spine count
Trophic type
Filters
Palearctic realm
Mediterranean forest
Upcoming birthdays
standing fresh waters — lakes, ponds, oxbow lakes
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Sweeps open mouth through water to scoop up fish or invertebrates.
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
Jubilee = every 10th birthday
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
young after fast growth
Juvenile stage following larval metamorphosis but not yet adult.
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
swampy freshwater biotopes — peat bogs, marshes, river mangroves
Find a pet...
Mature, fully developed individual capable of reproduction.
Freshwater
scooping
digging
Pets
all rivers and lakes
Primary oral structure used to seize, manipulate, or ingest food.
Lots of rain and cool summer
Feeding occurs primarily on land or in vegetation.
lateral line
{name} jubilee
cm
Old-timers
Find an animal or breed...
mouth
turns
Rascals
Litter size
Subocular spine 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?
Barbels size
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?
all rivers and lakes
lots of rain, cool summer, snow in winter
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
lakes and ponds
freshwater marsh and wetlands
Taxons
rivers and streams
if born as {name}
age
birth date
swimming
Palearctic realm
Close
was
Barbels count
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
3 to 8 grams, 0.5 – 5 centimeters
primary food sources
burrow
Potential Habitat
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
Feeding occurs in water bodies such as rivers, lakes, or oceans.
lots of rain, summer not hot
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
terrestrial
Body size
aquatic
{name} birthday
No results found
Yolk sac size
On the map
Female ♀
all life stages
dry and hot summer, warm and rainy winter
Body color
small worms
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?
Egg size
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
What do they eat?
insect larvae
Where do they live?
early young
Freshwater
Temperate mixed forest
Duration
filter feeding
Fins color
This is me
most of Europe and Asia, various forests, steppes and tundra
freshwater
Gamers
How are they built?
Cool summer and lots of rain
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
Asexual
swap
freshwater environment — rivers, lakes, ponds, swamps
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?
Sensory system detecting water movements to locate prey.
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
foraging
small worms without further specification
Berry
Hermaphrodite ⚥
embryo
summer warm, many oaks, birches, maples
Length
kg
Observations
◉{N} more on tap