The lawful grunt, or Senegalese pseudotolith, is a marine fish from the grunt family. It lives off the west coast of Africa in coastal waters and can produce sounds using its swim bladder.
The lawful grunt differs from related species in body shape and swim bladder structure, which allows it to produce sounds. It is important for the marine ecosystem as a mid-sized predator and a target for local fishermen.
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
Immature form that undergoes metamorphosis before adulthood.
Offspring
Worker
Elders
Bro
birth time
bottom
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
g
age
t
When your next jubilee falls in {name} life years
water is almost always warm, even in winter you can swim, very hot in summer
Human
birth date
Dorsal fins color
swimming
no permanent shelter
Close
was
days
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Marine world
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?
mollusks
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
adult
Maturity
fish of small size
primary food sources
crabs
live marine and freshwater shrimps
Melon
Potential Habitat
About health
marine coastal
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
Feeding occurs in water bodies such as rivers, lakes, or oceans.
Repro interval
results
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Body size
aquatic
Colors
vision
Sex
Warm sea
{name} birthday
Upcoming jubilees
Gremllins
mo
Dorsal fins count
No results found
all seas and oceans
Trophic type
Filters
small fish
On the map
lunge
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
Lateral line size
birth year
Maturity
Age (from birth to death)
sq mm
yr
Foraging occurs on the floor of aquatic or terrestrial habitats.
Wanderers
How similar?
Jubilee = every 10th birthday
Dorsal fins 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
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
What do they eat?
Where do they live?
young after fast growth
Marine world
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
River estuary into the sea
Freshwater
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
end of acceleration
Share
live snails, mussels, oysters
Duration
Find a pet...
Mature, fully developed individual capable of reproduction.
saline marine habitat
This is me
Actively hunting and capturing live prey.
Gamers
where the river flows into the sea, slightly salty water, lots of fish and birds
Pets
How are they built?
marine
shallow near the shore, water rises and falls, crabs live here
Primary oral structure used to seize, manipulate, or ingest food.
Indomalayan realm
mm
Theoretical lifespan
ml
Stars
Link copied
coastal marine zone — shelf, neritic zone
My age?
wk
My size?
lateral line
{name} jubilee
Asexual
swap
cm
Old-timers
Find an animal or breed...
Southeast Asia and islands, always hot and humid
active predation
mouth
coastal
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?
Sensory system detecting water movements to locate prey.
Swim bladder size
celebrated their {n} birthday
Lateral line color
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
live crabs, shrimps, lobsters
Daddies
Lifespan maximum
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 ⚥
shrimp
Where are they found?
all seas and oceans
Primarily detects and locates food using eyesight.
Species lacks any fixed or lasting shelter structure.
embryo
from 0.8 to 1.2 kilograms, 0.6 – 1.2 meters
all rivers and lakes
Length
kg
Rapid forward strike to seize prey.
Observations
◉{N} more on tap