Malthopsis jordani is a small deep-sea fish with a flat body in the shape of a disk. It moves along the seabed on its pectoral fins, which work like legs.
Malthopsis jordani differs from related species by its short fishing rod and the shape of the tubercles on the body. It is important for deep-sea ecosystems because it eats small animals and serves as food for larger predators.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Immature form that undergoes metamorphosis before adulthood.
Offspring
Worker
Elders
Bro
birth time
Pelagic Ocean
ambush
Taxons
carnivore
if born as {name}
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
bioluminescence
g
age
t
When your next jubilee falls in {name} life years
Predator remains still and concealed before launching a sudden attack.
Human
birth date
no permanent shelter
Pelvic fins count
Close
was
days
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Marine world
worms
The basics
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.
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
adult
Maturity
Mouth size
fish of small size
primary food sources
24 to 38 grams, 10 – 25 centimeters
Egg case color
Potential Habitat
About health
marine coastal
Pectoral fins count
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
results
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Illicium size
Pelvic fins size
Body size
Colors
Sex
{name} birthday
Upcoming jubilees
live annelid worms
Gremllins
mo
No results found
all seas and oceans
Trophic type
Filters
small fish
On the map
small crustaceans
all life stages
Female ♀
Body color
Upcoming birthdays
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 (juvenile)
Age (from birth to death)
sq mm
yr
Age (embryo)
Wanderers
Age (larva)
Body count
Attracts prey using bait, mimicry, or luminescent lure.
How similar?
seabed
far from shore, deep water, large whales and sharks live here
Jubilee = every 10th birthday
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?
luring
Neither
Earliest developmental stage inside an egg or womb.
Business sausages
from birth to adulthood
Lifespan average
What do they eat?
water is almost always cold, there may be ice in winter, not hot in summer
Where do they live?
young after fast growth
Immature individual that has not yet reached reproductive maturity.
from birth to death
Marine world
Egg case count
Juvenile stage following larval metamorphosis but not yet adult.
early young
What do they look like?
Maturity
emergence (insects)
world of Afrotropics
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
Duration
Find a pet...
Mature, fully developed individual capable of reproduction.
Cold sea
Pectoral fins color
saline marine habitat
This is me
Actively hunting and capturing live prey.
Gamers
Pets
How are they built?
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
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?
celebrated their {n} birthday
hot Africa south of the desert, many savannas and forests
When you would have been born if you lived as {name}
Littoral Zone
Litter size
Daddies
Illicium count
small crabs, amphipods and other crustaceans
Lifespan maximum
Illicium 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
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
Hermaphrodite ⚥
Tomato
Where are they found?
all seas and oceans
Pectoral fins size
Species lacks any fixed or lasting shelter structure.
embryo
Length
kg
Observations
◉{N} more on tap