Threadfin shad is a small silvery fish up to 20 centimeters long. It has a long thin ray on its dorsal fin resembling a thread, and it serves as important food for large predatory fish.
Threadfin shad differs from other herring fish by its very long thread-like ray on the dorsal fin. This fish is important for nature because it serves as the main food for perch, pike, and other predators in lakes and rivers.
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
shallow coastal zones of rivers and lakes
g
t
When your next jubilee falls in {name} life years
Human
days
Warm summer
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.
Captures food by straining water or substrate through specialized structures.
adult
Maturity
About health
When your next birthday would fall if you lived as {name}
Repro interval
results
summer warm, winter not very cold
Colors
Caudal fin color
Sex
Upcoming jubilees
Gremllins
mo
all seas and oceans
Trophic type
Filters
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
Desert and dry shrubs
16 to 24 grams, 7 – 12 centimeters
Age (juvenile)
Age (from birth to death)
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
algae
Jubilee = every 10th birthday
Draws prey or water into the mouth by creating negative pressure.
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
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
the upper illuminated layer of the sea, 0–200 meters
Share
swampy freshwater biotopes — peat bogs, marshes, river mangroves
Find a pet...
Mature, fully developed individual capable of reproduction.
Freshwater
hot, uneven rains, lots of grass and trees
where the river flows into the sea, slightly salty water, lots of fish and birds
Pets
all rivers and lakes
{name} jubilee
cm
zooplankton feeding, animal plankton — small crustaceans and larvae
Old-timers
Find an animal or breed...
turns
Rascals
Flooded grasslands
Dorsal fin count
Litter size
Tropical savanna
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?
Species lacks any fixed or lasting shelter structure.
Dorsal fin size
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
lakes and ponds
freshwater marsh and wetlands
Taxons
rivers and streams
if born as {name}
age
birth date
Palearctic realm
swimming
no permanent shelter
freshwater coastal and creek
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
marine epipelagic
The basics
Gill rakers count
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
primary food sources
Potential Habitat
suction
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.
planktivore
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Gestation
aquatic
{name} birthday
Nearctic realm
No results found
North America and Greenland, from tundra to forests
On the map
small crustaceans
Pleasant summer
all life stages
Female ♀
Body color
water filtration
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
phytoplanktophagy, plant plankton — microscopic algae
comfortable summer, +20…+25 °C
Body count
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
zoo-plankton
What do they eat?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
Marine world
from birth to death
phyto-plankton
early young
water often floods the land, lots of grass
River estuary into the sea
Freshwater
Temperate mixed forest
Duration
filter feeding
This is me
freshwater
Gamers
aquatic plants and algae
How are they built?
shallow near the shore, water rises and falls, crabs live here
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
Dorsal fin color
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?
celebrated their {n} birthday
When you would have been born if you lived as {name}
Littoral Zone
flowing fresh waters — rivers, streams, mountain torrents
Daddies
small crabs, amphipods and other crustaceans
Lifespan maximum
whole life
Hermaphrodite ⚥
Mandarin
embryo
summer warm, many oaks, birches, maples
Length
kg
very hot and dry, rare rains, cacti live
Observations
◉{N} more on tap