
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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european eel
Anguillidae
european eel
Anguillidae
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maingano cichlid
Cichlidae
maingano cichlid
Cichlidae
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Moenkhausia pittieri
Characidae
Moenkhausia pittieri
Characidae
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bleher's rainbowfish
Melanotaeniidae
bleher's rainbowfish
Melanotaeniidae
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tequila splitfin
Goodeidae
tequila splitfin
Goodeidae
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Schistura nilgiriensis
Nemacheilidae
Schistura nilgiriensis
Nemacheilidae
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Betta channoides
Osphronemidae
Betta channoides
Osphronemidae
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aruli barb
Cyprinidae
aruli barb
Cyprinidae
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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oceanic manta ray
Mobulidae
oceanic manta ray
Mobulidae
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yellow edged moray
Muraenidae
yellow edged moray
Muraenidae
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giant moray
Muraenidae
giant moray
Muraenidae
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tiger shark
Carcharhinidae
tiger shark
Carcharhinidae
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great barracuda
Sphyraenidae
great barracuda
Sphyraenidae
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scalloped hammerhead
Carcharhinidae
scalloped hammerhead
Carcharhinidae
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common stingray
Dasyatidae
common stingray
Dasyatidae
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nursehound
Scyliorhinidae
nursehound
Scyliorhinidae
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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Copella nattereri
Lebiasinidae
Copella nattereri
Lebiasinidae
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Charax tectifer
Characidae
Charax tectifer
Characidae
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Parodon buckleyi
Parodontidae
Parodon buckleyi
Parodontidae
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Hemiloricaria morrowi
Loricariidae
Hemiloricaria morrowi
Loricariidae
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Otocinclus hoppei
Loricariidae
Otocinclus hoppei
Loricariidae
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Nannostomus unifasciatus
Lebiasinidae
Nannostomus unifasciatus
Lebiasinidae
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Corydoras similis
Callichthyidae
Corydoras similis
Callichthyidae
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headstander
Chilodontidae
headstander
Chilodontidae
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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bullhead
Cottidae
bullhead
Cottidae
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rudd
Leuciscidae
rudd
Leuciscidae
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gudgeon
Gobionidae
gudgeon
Gobionidae
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Aphanius anatoliae
Cyprinodontidae
Aphanius anatoliae
Cyprinodontidae
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sturgeon
Acipenseridae
sturgeon
Acipenseridae
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grayling
Salmonidae
grayling
Salmonidae
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stone loach
Nemacheilidae
stone loach
Nemacheilidae
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Aphanius farsicus
Cyprinodontidae
Aphanius farsicus
Cyprinodontidae
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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european anchovy
Engraulidae
european anchovy
Engraulidae
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sand sole
Soleidae
sand sole
Soleidae
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axillary wrasse
Labridae
axillary wrasse
Labridae
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brown meagre
Sciaenidae
brown meagre
Sciaenidae
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Atherinomorus lacunosus
Atherinidae
Atherinomorus lacunosus
Atherinidae
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Atherina hepsetus
Atherinidae
Atherina hepsetus
Atherinidae
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picarel
Sparidae
picarel
Sparidae
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greater weever
Trachinidae
greater weever
Trachinidae
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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spotted weever
Trachinidae
spotted weever
Trachinidae
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madeira rockfish
Scorpaenidae
madeira rockfish
Scorpaenidae
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mediterranean rainbow wrasse
Labridae
mediterranean rainbow wrasse
Labridae
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tropical two-wing flyingfish
Exocoetidae
tropical two-wing flyingfish
Exocoetidae
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red scorpionfish
Scorpaenidae
red scorpionfish
Scorpaenidae
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pelagic stingray
Dasyatidae
pelagic stingray
Dasyatidae
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azores chromis
Pomacentridae
azores chromis
Pomacentridae
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red mullet
Mullidae
red mullet
Mullidae
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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yellowhead jawfish
Opistognathidae
yellowhead jawfish
Opistognathidae
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Lactophrys triqueter
Ostraciidae
Lactophrys triqueter
Ostraciidae
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yellowtail snapper
Lutjanidae
yellowtail snapper
Lutjanidae
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foureye butterflyfish
Chaetodontidae
foureye butterflyfish
Chaetodontidae
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flying gurnard
Dactylopteridae
flying gurnard
Dactylopteridae
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bermuda sea chub
Kyphosidae
bermuda sea chub
Kyphosidae
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Histrio histrio
Antennariidae
Histrio histrio
Antennariidae
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queen angelfish
Pomacanthidae
queen angelfish
Pomacanthidae
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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rockmover wrasse
Labridae
rockmover wrasse
Labridae
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boomerang triggerfish
Balistidae
boomerang triggerfish
Balistidae
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oriental flying gurnard
Dactylopteridae
oriental flying gurnard
Dactylopteridae
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stout chromis
Pomacentridae
stout chromis
Pomacentridae
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Miniatus grouper
Serranidae
Miniatus grouper
Serranidae
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bluestreak cleaner wrasse
Labridae
bluestreak cleaner wrasse
Labridae
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longhorn cowfish
Ostraciidae
longhorn cowfish
Ostraciidae
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blacktail snapper
Lutjanidae
blacktail snapper
Lutjanidae

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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Paracheirodon axelrodi
Characidae
Paracheirodon axelrodi
Characidae
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zebra danio
Danionidae
zebra danio
Danionidae
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Cyprinus rubrofuscus « Koï »
Cyprinidae
Cyprinus rubrofuscus « Koï »
Cyprinidae
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rainbow cichlid
Cichlidae
rainbow cichlid
Cichlidae
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blue discus
Cichlidae
blue discus
Cichlidae
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guppy
Poeciliidae
guppy
Poeciliidae
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harlequin rasbora
Danionidae
harlequin rasbora
Danionidae
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goldfish
Cyprinidae
goldfish
Cyprinidae