
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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Betta persephone
Osphronemidae
Betta persephone
Osphronemidae
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boeseman's rainbowfish
Melanotaeniidae
boeseman's rainbowfish
Melanotaeniidae
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Crenicichla ypo
Cichlidae
Crenicichla ypo
Cichlidae
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Nothobranchius korthausae
Cyprinodontidae
Nothobranchius korthausae
Cyprinodontidae
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Brevibora dorsiocellata
Danionidae
Brevibora dorsiocellata
Danionidae
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siberian sturgeon
Acipenseridae
siberian sturgeon
Acipenseridae
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lake kutubu rainbowfish
Melanotaeniidae
lake kutubu rainbowfish
Melanotaeniidae
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comanche springs pupfish
Cyprinodontidae
comanche springs pupfish
Cyprinodontidae
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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Triaenodon obesus
Carcharhinidae
Triaenodon obesus
Carcharhinidae
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giant moray
Muraenidae
giant moray
Muraenidae
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Hypanus americanus
Dasyatidae
Hypanus americanus
Dasyatidae
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spotted eagle ray
Aetobatidae
spotted eagle ray
Aetobatidae
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Taeniura grabata
Dasyatidae
Taeniura grabata
Dasyatidae
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yellow edged moray
Muraenidae
yellow edged moray
Muraenidae
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whale shark
Rhincodontidae
whale shark
Rhincodontidae
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common dolphinfish
Coryphaenidae
common dolphinfish
Coryphaenidae
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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Corydoras cruziensis
Callichthyidae
Corydoras cruziensis
Callichthyidae
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Hypselecara temporalis
Cichlidae
Hypselecara temporalis
Cichlidae
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Leporinus friderici
Anostomidae
Leporinus friderici
Anostomidae
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Corydoras eques
Callichthyidae
Corydoras eques
Callichthyidae
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Dicrossus maculatus
Cichlidae
Dicrossus maculatus
Cichlidae
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blackline penguinfish
Characidae
blackline penguinfish
Characidae
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Peckoltia brevis
Loricariidae
Peckoltia brevis
Loricariidae
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Apistogramma agassizii
Cichlidae
Apistogramma agassizii
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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Salaria fluviatilis
Blenniidae
Salaria fluviatilis
Blenniidae
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Gymnocephalus cernua
Percidae
Gymnocephalus cernua
Percidae
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Aphanius danfordii
Cyprinodontidae
Aphanius danfordii
Cyprinodontidae
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roach
Leuciscidae
roach
Leuciscidae
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brown trout
Salmonidae
brown trout
Salmonidae
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round goby
Gobiidae
round goby
Gobiidae
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pike-perch
Percidae
pike-perch
Percidae
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spined loach
Cobitidae
spined loach
Cobitidae
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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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
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Calcinus latens
Diogenidae
Calcinus latens
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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starry weever
Trachinidae
starry weever
Trachinidae
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mediterranean horse mackerel
Carangidae
mediterranean horse mackerel
Carangidae
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cornish sucker
Gobiesocidae
cornish sucker
Gobiesocidae
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goldsinny wrasse
Labridae
goldsinny wrasse
Labridae
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mediterranean rainbow wrasse
Labridae
mediterranean rainbow wrasse
Labridae
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grey wrasse
Labridae
grey wrasse
Labridae
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spotted seabass
Moronidae
spotted seabass
Moronidae
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whiskered sole
Soleidae
whiskered sole
Soleidae
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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red porgy
Sparidae
red porgy
Sparidae
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cleaver wrasse
Labridae
cleaver wrasse
Labridae
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pilotfish
Carangidae
pilotfish
Carangidae
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spotted weever
Trachinidae
spotted weever
Trachinidae
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ornate wrasse
Labridae
ornate wrasse
Labridae
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blennie diabolo
Blenniidae
blennie diabolo
Blenniidae
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zebra seabream
Sparidae
zebra seabream
Sparidae
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annular seabream
Sparidae
annular seabream
Sparidae
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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queen triggerfish
Balistidae
queen triggerfish
Balistidae
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caesar grunt
Haemulidae
caesar grunt
Haemulidae
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bicolor damselfish
Pomacentridae
bicolor damselfish
Pomacentridae
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atlantic bonito
Scombridae
atlantic bonito
Scombridae
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tropical two-wing flyingfish
Exocoetidae
tropical two-wing flyingfish
Exocoetidae
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pelagic stingray
Dasyatidae
pelagic stingray
Dasyatidae
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spot-fin porcupinefish
Diodontidae
spot-fin porcupinefish
Diodontidae
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gray triggerfish
Balistidae
gray triggerfish
Balistidae
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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elegant unicornfish
Acanthuridae
elegant unicornfish
Acanthuridae
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spot-fin porcupinefish
Diodontidae
spot-fin porcupinefish
Diodontidae
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devil firefish
Scorpaenidae
devil firefish
Scorpaenidae
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twospot turkeyfish
Scorpaenidae
twospot turkeyfish
Scorpaenidae
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regal angelfish
Pomacanthidae
regal angelfish
Pomacanthidae
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valentini's sharpnose puffer
Tetraodontidae
valentini's sharpnose puffer
Tetraodontidae
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bluestreak cleaner wrasse
Labridae
bluestreak cleaner wrasse
Labridae
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orange-lined triggerfish
Balistidae
orange-lined triggerfish
Balistidae

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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guppy
Poeciliidae
guppy
Poeciliidae
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clown anemonefish
Pomacentridae
clown anemonefish
Pomacentridae
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green swordtail
Poeciliidae
green swordtail
Poeciliidae
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freshwater angelfish
Cichlidae
freshwater angelfish
Cichlidae
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Trichogaster lalius
Osphronemidae
Trichogaster lalius
Osphronemidae
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rainbow cichlid
Cichlidae
rainbow cichlid
Cichlidae
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Cyprinus rubrofuscus « Koï »
Cyprinidae
Cyprinus rubrofuscus « Koï »
Cyprinidae
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harlequin rasbora
Danionidae
harlequin rasbora
Danionidae