The hitch, or Lavinia exilicauda, is a freshwater fish from the cyprinid family. It lives in lakes and rivers of California and feeds on diverse food.
The hitch differs from related cyprinid fish by its silvery body and forked tail. It serves as important food for predatory fish and birds and helps maintain balance in California's freshwater ecosystems.
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
Yolk sac count
Human
detritus, eat dead remains of plants, animals and all kinds of organic debris on the bottom
very cold, short summer, almost no trees, lots of moss
days
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
organic debris
invertebrates
About health
When your next birthday would fall if you lived as {name}
Repro interval
results
summer warm and almost no rain
Colors
Caudal fin color
Sex
Upcoming jubilees
Gremllins
mo
Trophic type
all living animals without backbone
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
Height
Desert and dry shrubs
Age (juvenile)
insect larvae and caterpillars
Age (from birth to death)
Age (embryo)
Wanderers
algae
Jubilee = every 10th birthday
Egg membrane size
Draws prey or water into the mouth by creating negative pressure.
Tundra
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
Share
swampy freshwater biotopes — peat bogs, marshes, river mangroves
Find a pet...
Mature, fully developed individual capable of reproduction.
Freshwater
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.
Nearctic realm
{name} jubilee
cm
zooplankton feeding, animal plankton — small crustaceans and larvae
Old-timers
Find an animal or breed...
mouth
turns
Rascals
Flooded grasslands
Dorsal fin count
after fast growth and adult
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?
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
lakes and ponds
freshwater marsh and wetlands
Taxons
rivers and streams
if born as {name}
omnivore
age
birth date
swimming
no permanent shelter
Egg membrane count
Close
was
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
primary food sources
gills
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.
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
Caudal fin count
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
lots of grass, few trees, rains occur
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
zoo-plankton
What do they eat?
insect larvae
Where do they live?
Immature individual that has not yet reached reproductive maturity.
early young
water often floods the land, lots of grass
River estuary into the sea
Freshwater
Egg membrane color
Duration
filter feeding
This is me
Warm summer with almost no rain
Lateral line count
freshwater
Gamers
aquatic plants and algae
How are they built?
Temperate steppe
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
Scales 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}
flowing fresh waters — rivers, streams, mountain torrents
Daddies
Lifespan maximum
whole life
Hermaphrodite ⚥
North America and Greenland, from tundra to forests
embryo
Carrot
Length
kg
very hot and dry, rare rains, cacti live
Rapid forward strike to seize prey.
Observations
◉{N} more on tap