
Encyclopedias of species

Endangered fish
Many species are currently vulnerable. Out of the 10,500 freshwater fish species whose conservation status has been assessed by the IUCN, 30% are considered endangered.
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sterlet sturgeon
Acipenseridae
sterlet sturgeon
Acipenseridae
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Nothobranchius korthausae
Cyprinodontidae
Nothobranchius korthausae
Cyprinodontidae
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giant pangasius
Siluridae
giant pangasius
Siluridae
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nkhomo-benga peacock
Cichlidae
nkhomo-benga peacock
Cichlidae
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carachamita
Loricariidae
carachamita
Loricariidae
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krabi mouth brooding betta
Osphronemidae
krabi mouth brooding betta
Osphronemidae
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Schistura nilgiriensis
Nemacheilidae
Schistura nilgiriensis
Nemacheilidae
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Huso huso
Acipenseridae
Huso huso
Acipenseridae
The giants of the oceans
Nowadays, the large aquatic species are becoming rare and threatened due to overfishing. Many of these species have slow growth rates and have been heavily targeted over the past centuries, with a peak in the 1990s.
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green moray
Muraenidae
green moray
Muraenidae
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Malabar grouper
Serranidae
Malabar grouper
Serranidae
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white shark
Lamnidae
white shark
Lamnidae
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coelacanth
Latimeriidae
coelacanth
Latimeriidae
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scalloped hammerhead
Carcharhinidae
scalloped hammerhead
Carcharhinidae
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sailfish
Istiophoridae
sailfish
Istiophoridae
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common stingray
Dasyatidae
common stingray
Dasyatidae
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oceanic manta ray
Mobulidae
oceanic manta ray
Mobulidae
Jewels of the reefs
Coral reefs showcase the most extravagant marine fauna. All sizes, shapes, colors, and patterns come together in this joyful parade. Reefs are essential for marine balance.
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Triggerfishes
The bullies of the reefs
Triggerfishes
The bullies of the reefs
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Surgeonfish
The Scalpel Specialists
Surgeonfish
The Scalpel Specialists
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Clownfish
The residents of the anemones
Clownfish
The residents of the anemones
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seahorses
Seahorses
seahorses
Seahorses
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breams and basses
breams and basses
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scorpionfishes
Scorpionfishes
scorpionfishes
Scorpionfishes
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The fish of the Amazon
The Amazon, the largest freshwater basin in the world, is characterized by the diversity of its habitats and numerous biodiversity hotspots. In 2024, over 2,500 fish species were recorded there, but research and exploration efforts are still ongoing.
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Panaque sp. L191
Loricariidae
Panaque sp. L191
Loricariidae
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Apistogramma sp. 'Vielfleck'
Cichlidae
Apistogramma sp. 'Vielfleck'
Cichlidae
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Bloch's catfish
Pimelodidae
Bloch's catfish
Pimelodidae
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blue discus
Cichlidae
blue discus
Cichlidae
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Hemiodus gracilis
Hemiodontidae
Hemiodus gracilis
Hemiodontidae
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network catfish
Callichthyidae
network catfish
Callichthyidae
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Petitella georgiae
Characidae
Petitella georgiae
Characidae
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Apistogramma inconspicua
Cichlidae
Apistogramma inconspicua
Cichlidae
The fish Europeans
Not always known to the general public, the fauna that inhabits our lakes, rivers, and streams is very diverse. The arrival of invasive species and the drying up of wetlands threaten nearly a quarter of Europe's freshwater fish species.
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roach
Leuciscidae
roach
Leuciscidae
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siberian sturgeon
Acipenseridae
siberian sturgeon
Acipenseridae
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largemouth black bass
Centrarchidae
largemouth black bass
Centrarchidae
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Salaria fluviatilis
Blenniidae
Salaria fluviatilis
Blenniidae
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grayling
Salmonidae
grayling
Salmonidae
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wels catfish
Siluridae
wels catfish
Siluridae
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european pilchard
Clupeidae
european pilchard
Clupeidae
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brown trout
Salmonidae
brown trout
Salmonidae
of the Americas
Present on Earth before the dinosaurs, snakes have inspired numerous myths and beliefs, from the depths of the Amazon to the Bible.
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green anaconda
Boidae
green anaconda
Boidae
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rainbow snake
Colubridae
rainbow snake
Colubridae
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red-bellied mudsnake
Colubridae
red-bellied mudsnake
Colubridae
The crustaceans
With their warrior-like appearance, crustaceans are exceptional cleaners and scavengers. There are now over 50,000 species with forms as diverse as daphnia, crabs, or mantis shrimp.
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Calcinus laevimanus
Diogenidae
Calcinus laevimanus
Diogenidae
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Pacifastacus leniusculus
Astacidae
Pacifastacus leniusculus
Astacidae
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Geosesarma dennerle
Sesarmidae
Geosesarma dennerle
Sesarmidae
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Ranina ranina
Raninidae
Ranina ranina
Raninidae
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Percnon planissimum
Plagusiidae
Percnon planissimum
Plagusiidae
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Alpheus randalli
Alpheidae
Alpheus randalli
Alpheidae
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Dardanus deformis
Diogenidae
Dardanus deformis
Diogenidae
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Dardanus guttatus
Diogenidae
Dardanus guttatus
Diogenidae
The mollusks
From snails to squids, there are now 50,000 recorded
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Octopus cyanea
Octopodidae
Octopus cyanea
Octopodidae
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Bolinus brandaris
Muricidae
Bolinus brandaris
Muricidae
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Murex pecten
Muricidae
Murex pecten
Muricidae
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Mauritia mauritiana
Cypraeidae
Mauritia mauritiana
Cypraeidae
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Mauritia arabica
Cypraeidae
Mauritia arabica
Cypraeidae
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Thaumoctopus mimicus
Octopodidae
Thaumoctopus mimicus
Octopodidae
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blue dragon / blue sea slug
Glaucidae
blue dragon / blue sea slug
Glaucidae
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Rochia nilotica
tegulidae
Rochia nilotica
tegulidae

The fish of the Mediterranean
There are over 700 fish species recorded in the Mediterranean Sea. Many species, especially in the wrasse family, only inhabit these waters, which are now heavily impacted by human activities.
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atlantic bonito
Scombridae
atlantic bonito
Scombridae
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tompot blenny
Blenniidae
tompot blenny
Blenniidae
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blennie de roux
Blenniidae
blennie de roux
Blenniidae
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brown meagre
Sciaenidae
brown meagre
Sciaenidae
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red scorpionfish
Scorpaenidae
red scorpionfish
Scorpaenidae
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starry weever
Trachinidae
starry weever
Trachinidae
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short-snouted seahorse
Syngnathidae
short-snouted seahorse
Syngnathidae
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painted comber
Serranidae
painted comber
Serranidae
The fish of the Canary Islands
Located off the coast of Morocco, the Canary Islands host unique marine biodiversity, blending species from the Mediterranean Sea with the first subtropical animals of the Atlantic Ocean. Here, you can find flute fish, several species of damselfish, and pufferfish, among others.
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african striped grunt
Haemulidae
african striped grunt
Haemulidae
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sharpsnout seabream
Sparidae
sharpsnout seabream
Sparidae
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longspine snipefish
Centriscidae
longspine snipefish
Centriscidae
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black-faced blenny
Tripterygiidae
black-faced blenny
Tripterygiidae
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bogue
Sparidae
bogue
Sparidae
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striped seabream
Sparidae
striped seabream
Sparidae
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red porgy
Sparidae
red porgy
Sparidae
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island grouper
Serranidae
island grouper
Serranidae
The fish of the Caribbean
The Caribbean Sea is home to the world's second-largest coral reef, the Mesoamerican Barrier Reef. This coral barrier stretches for about 1,000 km along the Caribbean coast of Mexico, Belize, Guatemala, and Honduras. It houses 10% of the world's coral reefs and over 1,400 species of fish and marine mammals.
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bluestriped grunt
Haemulidae
bluestriped grunt
Haemulidae
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sheepshead
Sparidae
sheepshead
Sparidae
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honeycomb cowfish
Ostraciidae
honeycomb cowfish
Ostraciidae
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spanish hogfish
Labridae
spanish hogfish
Labridae
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horse-eye jack
Carangidae
horse-eye jack
Carangidae
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bermuda sea chub
Kyphosidae
bermuda sea chub
Kyphosidae
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pilotfish
Carangidae
pilotfish
Carangidae
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pelagic stingray
Dasyatidae
pelagic stingray
Dasyatidae
The fish of Réunion and the western Indian Ocean
A volcanic island situated west of the Indian Ocean, Réunion has a discontinuous belt of lagoons formed by coral reefs. In the lagoons protected by coral barriers, aquatic fauna is easily accessible to divers and bathers. Unfortunately, these areas are often degraded by human activities.
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threadfin butterflyfish
Chaetodontidae
threadfin butterflyfish
Chaetodontidae
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blackspotted puffer
Tetraodontidae
blackspotted puffer
Tetraodontidae
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bleeker's parrotfish
Scaridae
bleeker's parrotfish
Scaridae
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longnose hawkfish
Cirrhitidae
longnose hawkfish
Cirrhitidae
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regal angelfish
Pomacanthidae
regal angelfish
Pomacanthidae
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harlequin filefish
Monacanthidae
harlequin filefish
Monacanthidae
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twospot turkeyfish
Scorpaenidae
twospot turkeyfish
Scorpaenidae
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spot-fin porcupinefish
Diodontidae
spot-fin porcupinefish
Diodontidae

The stars of freshwater
There are countless species available to populate your aquariums, but how do you choose? Behavior, size, longevity, reproduction... discover which ones will adapt best to your project and desires.
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dwarf cichlids
The small tropical territorial fish
dwarf cichlids
The small tropical territorial fish
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livebearers
Mosquito eaters
livebearers
Mosquito eaters
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Loaches
Loaches
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freshwater dwarf shrimps
The tiny jewels of tropical rivers
freshwater dwarf shrimps
The tiny jewels of tropical rivers
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catfish
catfish
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Icons of the aquarium hobby
Fighters, guppies, angelfish, discus... these fish have fascinated generations of enthusiasts. However, it's very important to know their maintenance requirements well, allowing them to have a long and enjoyable life by your side.
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Trichogaster lalius
Osphronemidae
Trichogaster lalius
Osphronemidae
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Pangio kuhlii
Cobitidae
Pangio kuhlii
Cobitidae
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Siamese fighting fish
Osphronemidae
Siamese fighting fish
Osphronemidae
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celestial pearl danio
Danionidae
celestial pearl danio
Danionidae
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Paracheirodon axelrodi
Characidae
Paracheirodon axelrodi
Characidae
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harlequin rasbora
Danionidae
harlequin rasbora
Danionidae
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green swordtail
Poeciliidae
green swordtail
Poeciliidae
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freshwater angelfish
Cichlidae
freshwater angelfish
Cichlidae