The elongated gonostoma is a deep-sea fish with a very long and thin body. It lives in complete darkness at great ocean depths and uses luminous organs for hunting.
The elongated gonostoma differs from related species by its particularly long body and unique pattern of luminous organs. It is important for nature because it transfers substances from the upper layers of the ocean to the deep ones and serves as food for large predatory fish.
Immature form that undergoes metamorphosis before adulthood.
Worker
birth time
Pelagic Ocean
Mouth count
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
swallowing prey with teeth
g
t
When your next jubilee falls in {name} life years
Human
days
marine pelagic
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.
adult
Maturity
fish of small size
marine benthic
Fins count
About health
marine demersal
When your next birthday would fall if you lived as {name}
results
Colors
Sex
Upcoming jubilees
Gremllins
mo
all seas and oceans
Trophic type
Filters
small fish
Upcoming birthdays
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Age (juvenile)
Age (from birth to death)
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
far from shore, deep water, large whales and sharks live here
world of Australasia
Jubilee = every 10th birthday
Earliest developmental stage inside an egg or womb.
Business sausages
the twilight zone of the sea, 200–1000 meters depth
Lifespan average
water is almost always cold, there may be ice in winter, not hot in summer
Rapidly swallows prey or food items whole without chewing.
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.
Cold sea
gulping
Egg count
water is cool or warm, cold in winter, comfortable to swim in summer
Actively hunting and capturing live prey.
Pets
Primary oral structure used to seize, manipulate, or ingest food.
Indomalayan realm
whole swallow
{name} jubilee
Photophores count
cm
zooplankton feeding, animal plankton — small crustaceans and larvae
Old-timers
Find an animal or breed...
mouth
turns
Rascals
hot Africa south of the desert, many savannas and forests
Abyssal Ocean
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
pelagic zone — open water far from shore and seabed
Where are they found?
all seas and oceans
Species lacks any fixed or lasting shelter structure.
38 to 65 grams, 15 – 40 centimeters
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
Photophores color
Offspring
Elders
Bro
Taxons
carnivore
if born as {name}
age
birth date
Palearctic realm
swimming
no permanent shelter
Close
water column
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Marine world
The basics
My weight?
marine mesopelagic
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
primary food sources
teeth
Temperate sea
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
Gestation
Body size
islands and part of Australia, many unusual animals and plants
aquatic
{name} birthday
No results found
very deep, dark and cold, strange fish live here
On the map
small crustaceans
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
Maturity
sq mm
yr
benthic zone — the bottom of the open sea
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
zoo-plankton
What do they eat?
Where do they live?
Marine world
from birth to death
early young
Hard dental structures used to bite, tear, or scrape food.
world of Afrotropics
Duration
saline marine habitat
This is me
Gamers
How are they built?
marine
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
Asexual
swap
Southeast Asia and islands, always hot and humid
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?
celebrated their {n} birthday
When you would have been born if you lived as {name}
Daddies
small crabs, amphipods and other crustaceans
Lifespan maximum
whole life
Hermaphrodite ⚥
embryo
Orange
Length
kg
near-bottom water layer of the open sea
Observations
◉{N} more on tap