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Tetra are species of small South America
South America

South America is the southern continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere....
n freshwater fish
Fish

A fish is any marine biology vertebrate animal that is typically ectothermic , covered with scale , and equipped with two sets of paired fins and several unpaired fins....
, belonging to the family Characidae
Characidae

The Characidae, characids or characins are a Family of Fresh water subtropical and tropical fish, belonging to the Order Characiformes....
 and to its former subfamilies Alestiidae
Alestiidae

African tetras are a group of Characiformes fish exclusively found in Africa. This family contains about 18 genera and 110 species.Among the best known members are the Congo tetra, and Hydrocynus....
 (the "African tetras") and Lebiasinidae
Lebiasinidae

The Lebiasinidae , are a family of freshwater fishes found in Costa Rica, Panama, and South America. They are usually small and are known as ornamental fishes in Aquarium, including popular fishes such as the pencil fish and splashing tetra....
. The characidae are distinguished from other fish by the presence of a small adipose fin between the dorsal fin
Dorsal fin

A wikt:dorsal fin is a fin located on the backs of some fish, whales, dolphins, and porpoises, as well as the ichthyosaurs. Its main purpose is to stabilize the animal against rolling and assist in sudden turns....
 and caudal fin. Many of these, such as the neon tetra
Neon tetra

The neon tetra is a freshwater fish of the characin family of order Characiformes. The type species of its genus, it is native to blackwater or clearwater streams in southeastern Colombia, eastern Peru, and western Brazil, including the tributaries of the Solim?es where the water is between 20–26?C....
, are brightly colored and easy to keep in captivity, and extremely popular for home aquaria
Aquaria

Aquaria may refer to:*The plural of Aquarium*Aquaria , a 2D sidescrolling computer game*Aquaria , a symphonic power metal band from Rio de Janeiro, Brazil...
.

The term tetra is not actually a taxonomic, phylogenetic term.






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Tetra are species of small South America
South America

South America is the southern continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere....
n freshwater fish
Fish

A fish is any marine biology vertebrate animal that is typically ectothermic , covered with scale , and equipped with two sets of paired fins and several unpaired fins....
, belonging to the family Characidae
Characidae

The Characidae, characids or characins are a Family of Fresh water subtropical and tropical fish, belonging to the Order Characiformes....
 and to its former subfamilies Alestiidae
Alestiidae

African tetras are a group of Characiformes fish exclusively found in Africa. This family contains about 18 genera and 110 species.Among the best known members are the Congo tetra, and Hydrocynus....
 (the "African tetras") and Lebiasinidae
Lebiasinidae

The Lebiasinidae , are a family of freshwater fishes found in Costa Rica, Panama, and South America. They are usually small and are known as ornamental fishes in Aquarium, including popular fishes such as the pencil fish and splashing tetra....
. The characidae are distinguished from other fish by the presence of a small adipose fin between the dorsal fin
Dorsal fin

A wikt:dorsal fin is a fin located on the backs of some fish, whales, dolphins, and porpoises, as well as the ichthyosaurs. Its main purpose is to stabilize the animal against rolling and assist in sudden turns....
 and caudal fin. Many of these, such as the neon tetra
Neon tetra

The neon tetra is a freshwater fish of the characin family of order Characiformes. The type species of its genus, it is native to blackwater or clearwater streams in southeastern Colombia, eastern Peru, and western Brazil, including the tributaries of the Solim?es where the water is between 20–26?C....
, are brightly colored and easy to keep in captivity, and extremely popular for home aquaria
Aquaria

Aquaria may refer to:*The plural of Aquarium*Aquaria , a 2D sidescrolling computer game*Aquaria , a symphonic power metal band from Rio de Janeiro, Brazil...
.

The term tetra is not actually a taxonomic, phylogenetic term. Because of the popularity of tetras in the fishkeeping
Fishkeeping

Fishkeeping is a popular hobby concerned with keeping fish in the home aquarium or garden pond....
 hobby
Hobby

A hobby is a leisure recreational pursuit....
, many unrelated fish are commonly known as tetras, including species from differing families. Even fish that are vastly different may be called tetras, such as Hydrolycus scomberoides, occasionally known as the Sabretooth Tetra or vampire tetra.

Although the list below is sorted by common name, in a number of cases the common name is applied to different species, depending on country and context. Since the aquarium
Aquarium

An aquarium is a vivarium consisting of at least one transparent side in which water-dwelling plants or animals are kept. fishkeeping use aquaria to keep fish, invertebrates, amphibians, marine mammals, turtles, and aquatic plants....
 trade may use a different name for the same species, advanced aquarists tend to use scientific names for the less-common tetras. The list below is incomplete.

Tetra species:

  • Adonis tetra Lepidarchus adonis
  • African long-finned tetra Brycinus longipinnis
  • African moon tetra Bathyaethiops caudomaculatus
  • Arnold's tetra Arnoldichthys spilopterus
  • Buenos Aires tetra
    Buenos Aires tetra

    The Buenos Aires Tetra is a hardy and boisterous community tropical fish which was discovered in South America. It is best kept in shoals....
     Hyphessobrycon anisitsi
  • Banded tetra Astyanax fasciatus
  • Bandtail tetra Moenkhausia dichroura
  • Barred glass tetra Phenagoniates macrolepis
  • Bass tetra Hemigrammus rodwayi
  • Beacon tetra Hemigrammus ocellifer
  • Belgian flag tetra Hyphessobrycon heterorhabdus
  • Black darter tetra Poecilocharax weitzmani
  • Black morpho tetra Poecilocharax weitzmani
  • Black neon tetra
    Black neon tetra

    The black neon tetra is a freshwater fish of the characinfamily oforder Characiformes. It is native to theParaguay River basin of southern Brazil....
     Hyphessobrycon herbertaxelrodi
  • Black phantom tetra
    Black phantom tetra

    The black phantom tetra is a freshwater fish of the characinfamily oforder Characiformes. It is native to theParaguay River, Guapor? River, and...
     Hyphessobrycon megalopterus
  • Black tetra
    Black tetra

    The black tetra also known as the black skirt tetra or black widow tetra is a freshwater fishof the characin family , oforder Characiformes....
     Gymnocorymbus ternetzi
  • Black tetra Gymnocorymbus thayer
  • Black wedge tetra Hemigrammus pulcher
  • Blackband tetra Hyphessobrycon scholzei
  • Blackedge tetra Tyttocharax madeirae
  • Black-flag tetra Hyphessobrycon rosaceus
  • Black-jacket tetra Moenkhausia takasei
  • Blackline tetra Hyphessobrycon scholzei
  • Bleeding heart tetra Hyphessobrycon erythrostigma
    Hyphessobrycon erythrostigma

    Bleeding Heart Tetra, Hyphessobrycon erythrostigma is a peaceful mid-dwelling community fish in the aquarium. Grows to the size of 64mm and lives about 5 years....
  • Bleeding heart tetra Hyphessobrycon socolofi
  • Blind tetra Stygichthys typhlops
  • Bloodfin tetra
    Bloodfin tetra

    The Bloodfin Tetra is a type of tropical fish. Bloodfins are comparatively large tetras, growing to 5.5 cm. Its notable feature is the blood red colouration at the tail, dorsal, anal and adipose fin....
     Aphyocharax anisitsi
  • Bloodfin tetra
    Bloodfin tetra

    The Bloodfin Tetra is a type of tropical fish. Bloodfins are comparatively large tetras, growing to 5.5 cm. Its notable feature is the blood red colouration at the tail, dorsal, anal and adipose fin....
     Aphyocharax alburnus
  • Blue tetra
    Blue Tetra

    Blue Tetra is a common name used for various species of tetra including:*Mimagoniates microlepis*Tyttocharax madeirae*''Boehlkea fredcochui...
     Mimagoniates microlepis
    Mimagoniates microlepis

    Mimagoniates microlepis, also known as the Blue Tetra , the Croaking Tetra , the Small-Scaled Tetra, is a species of tetra in the genus Mimagoniates....
  • Blue tetra
    Blue Tetra

    Blue Tetra is a common name used for various species of tetra including:*Mimagoniates microlepis*    Tyttocharax madeirae*''Boehlkea fredcochui...
     Tyttocharax madeirae
  • Blue tetra
    Blue Tetra

    Blue Tetra is a common name used for various species of tetra including:*Mimagoniates microlepis*    Tyttocharax madeirae*''Boehlkea fredcochui...
     Boehlkea fredcochui
  • Brilliant rummynose tetra Hemigrammus bleheri
  • Bucktooth tetra
    Bucktooth tetra

    The bucktooth tetra is the only member of the genus Exodon and is a freshwater fish of the characin family of order Characiformes. It is native to South America....
     Exodon paradoxus
  • Buenos Aires tetra
    Buenos Aires tetra

    The Buenos Aires Tetra is a hardy and boisterous community tropical fish which was discovered in South America. It is best kept in shoals....
     Hyphessobrycon anisitsi
  • Butterfly tetra Gymnocorymbus ternetzi
  • Callistus tetra Hyphessobrycon eques
  • Calypso tetra Hyphessobrycon axelrodi
  • Cardinal tetra
    Cardinal tetra

    The Cardinal tetra, Paracheirodon axelrodi, is a freshwaterfish of the characin family of order Characiformes. It is nativeto the upper Orinoco and Rio Negro Rivers in South America....
     Paracheirodon axelrodi
  • Carlana tetra Carlana eigenmanni
  • Cochu's blue tetra Boehlkea fredcochui
  • Central tetra Astyanax aeneus
  • Coffee-bean tetra Hyphessobrycon takasei
  • Colcibolca tetra Astyanax nasutus
  • Congo tetra
    Congo tetra

    The Congo tetra, Phenacogrammus interruptus, is a freshwater schooling characin, a type of fish popular in aquariums. They may grow to 100 millimetres and are suitable for a community aquarium....
     Phenacogrammus interruptus
  • Copper tetra Hasemania melanura
  • Costello tetra Hemigrammus hyanuary
  • Creek tetra Bryconamericus scleroparius
  • Creek tetra Bryconamericus terrabensis
  • Croaking tetra Mimagoniates inequalis
    Mimagoniates inequalis

    Mimagoniates inequalis, known as the Croaking Tetra , is a species of tetra in the genus Mimagoniates. It was previously classified as Glandulocauda inequalis...
  • Croaking tetra Mimagoniates lateralis
    Mimagoniates lateralis

    Mimagoniates lateralis is a species of tetra in the genus Mimagoniates. Its common names includeCroaking Tetra ....
  • Dawn tetra Hyphessobrycon eos
  • Dawn tetra Aphyocharax paraguayensis
  • Diamond tetra Moenkhausia pittieri
  • Discus tetra Brachychalcinus orbicularis
  • Disk tetra Brachychalcinus orbicularis
  • Disk tetra Myleus schomburgkii
  • Dragonfin tetra Pseudocorynopoma doriae
  • Ember tetra
    Ember tetra

    The ember tetra is a freshwater fish of the characinfamily oforder Characiformes. It is native to the Araguaia River basin of Brazil and was discovered around fifteen years ago and named in honor of the fish explorer Heiko Bleher's mother ....
     Hyphessobrycon amandae
  • Emperor tetra
    Emperor tetra

    The Emperor tetra is a fish found in the northern part of South America....
     Nematobrycon palmeri
  • False black tetra Gymnocorymbus thayeri
  • False neon tetra Paracheirodon simulans
  • False red nose tetra Petitella georgiae
  • False rummynose tetra Petitella georgiae
  • Featherfin tetra Hemigrammus unilineatus
  • Firehead tetra Hemigrammus bleheri
  • Flag tetra Hyphessobrycon heterorhabdus
  • Flame tail tetra Aphyocharax erythrurus
  • Flame tetra
    Flame tetra

    The Flame Tetra , also known as the Red Tetra or Von Rio Tetra, is a small freshwater fish of the characin family Characidae of order Characiformes. The species was first introduced as aquarium fish in 1920 by C....
     Hyphessobrycon flammeus
  • Garnet tetra Hemigrammus pulcher
  • Glass tetra Moenkhausia oligolepis
  • Glossy tetra Moenkhausia oligolepis
  • Glowlight tetra Hemigrammus erythrozonus
  • Gold tetra Hemigrammus rodwayi
  • Golden tetra Hemigrammus rodwayi
  • Goldencrown tetra Aphyocharax alburnus
  • Goldspotted tetra Hyphessobrycon griemi
  • Gold-tailed tetra Carlastyanax aurocaudatus
  • Green dwarf tetra Odontocharacidium aphanes
  • Green neon tetra
    Green neon tetra

    The green neon tetra is a freshwaterfish of the characin family of order Characiformes. It is native to the upper Orinoco and Rio Negro Rivers in South America....
     Paracheirodon simulans
  • Green tetra Paracheirodon simulans
  • Griem's tetra Hyphessobrycon griemi
  • Head-and-taillight tetra Hemigrammus ocellifer
  • January tetra Hemigrammus hyanuary
  • Jellybean Tetra
    Jellybean Tetra

    The jellybean tetra is a species of fish seldom seen in the aquarium trade. It originates in West Africa and prefers soft, acidic water....
     Lepidarchus adonis
  • Jewel tetra Hyphessobrycon eques
  • Jumping tetra Hemibrycon tridens
  • Largespot tetra Astyanax orthodus
  • Lemon tetra
    Lemon tetra

    The lemon tetra, Hyphessobrycon pulchripinnis, is a species of tropical freshwater fish which originates from South America, belonging to the family Characidae....
     Hyphessobrycon pulchripinnis
  • Longfin tetra Brycinus longipinnis
  • Long-finned glass tetra Xenagoniates bondi
  • Longjaw tetra Bramocharax bransfordii
  • Loreto tetra Hyphessobrycon loretoensis
  • Mayan tetra Hyphessobrycon compressus
  • Mexican tetra
    Mexican tetra

    The Mexican tetra or Blind Cave Fish is a freshwater fishof the characin family oforder Characiformes.The type species of its genus, it is native to the Nearctic ecozone, originating in the lower Rio Grande and the Nueces River and Pecos Rivers in Texas as well as the central and eastern parts of Mexico....
     Astyanax mexicanus
  • Mimic scale-eating tetra Probolodus heterostomus
  • Mourning tetra Brycon pesu
  • Naked Tetra Gymnocharacinus bergii
  • Neon tetra
    Neon tetra

    The neon tetra is a freshwater fish of the characin family of order Characiformes. The type species of its genus, it is native to blackwater or clearwater streams in southeastern Colombia, eastern Peru, and western Brazil, including the tributaries of the Solim?es where the water is between 20–26?C....
     Paracheirodon innesi
  • Niger tetra Arnoldichthys spilopterus
  • Nurse tetra Brycinus nurse
  • Oneline tetra Nannaethiops unitaeniatus
  • One-line tetra Hemigrammus unilineatus
  • Orangefin tetra Bryconops affinis
  • Ornate tetra Hyphessobrycon bentosi
  • Panama tetra Hyphessobrycon panamensis
  • Penguin tetra Thayeria boehlkei
  • Peruvian tetra Hyphessobrycon peruvianus
  • Petticoat tetra Gymnocorymbus ternetzi
  • Phantom tetra Hyphessobrycon megalopterus
  • Pittier's tetra Moenkhausia pittieri
  • Pretty tetra Hemigrammus pulcher
  • Pristella tetra Pristella maxillaris
    Pristella maxillaris

    Pristella maxillaris is the only genus in the family Pristella and is commonly known as the x-ray fish or x-ray tetra because of its highly transparent body....
  • Pygmy tetra Odontostilbe dialeptura
  • Rainbow tetra Nematobrycon palmeri
  • Rainbow tetra Nematobrycon lacortei
  • Red eye tetra
    Red eye tetra

    The red eye tetra, also known as the Yellow Banded Moenkhausia, the Yellow back Moenkhausia and the Yellowhead Tetra is a species of tetra. They are a freshwater fish, can grow up to 7cm, and can live for approximately 5 years....
     Moenkhausia sanctaefilomenae
  • Red phantom tetra Hyphessobrycon sweglesi
  • Red tetra Hyphessobrycon flammeus
  • Rednose tetra Hemigrammus rhodostomus
  • Red-nose tetra Hemigrammus bleheri
  • Redspotted tetra Copeina guttata
  • Rosy tetra Hyphessobrycon bentosi
  • Rosy tetra Hyphessobrycon rosaceus
  • Royal tetra Inpaichthys kerri
  • Ruby tetra Axelrodia riesei
  • Rummy-nose tetra
    Rummy-nose tetra

    The rummy-nose tetra, Hemigrammus rhodostomus, is a species of tropical freshwater Characidae fish originating from South America, popular among fishkeepers as an aquarium fish....
     Hemigrammus rhodostomus
  • Rummy-nose tetra
    Rummy-nose tetra

    The rummy-nose tetra, Hemigrammus rhodostomus, is a species of tropical freshwater Characidae fish originating from South America, popular among fishkeepers as an aquarium fish....
     Hemigrammus bleheri
  • Sailfin tetra Crenuchus spilurus
  • Savage tetra Hyphessobrycon savagei
  • Savanna tetra Hyphessobrycon stegemanni
  • Semaphore tetra Pterobrycon myrnae
  • Serpae tetra
    Serpae tetra

    Serpae tetras are one species of the genus Hyphessobrycon, now known as Hyphessobrycon eques. These South American tropical characids are popular aquarium fishes, often identified as Red Minor tetras....
     Hyphessobrycon eques
  • Sharptooth tetra Micralestes acutidens
  • Silver tetra Gymnocorymbus thayeri
  • Silver tetra Ctenobrycon spilurus
  • Silver tetra Micralestes acutidens
  • Silvertip tetra
    Silvertip tetra

    Silvertip tetra are freshwater tetra fish native to blackwater river in Brazil. Silver Tip Tetras are slightly more aggressive than other comparative smaller Tetras, observed to occasionally nip other similarly sized Tetras....
     Hasemania melanura
  • Silvertip tetra
    Silvertip tetra

    Silvertip tetra are freshwater tetra fish native to blackwater river in Brazil. Silver Tip Tetras are slightly more aggressive than other comparative smaller Tetras, observed to occasionally nip other similarly sized Tetras....
     Hasemania nana
  • Silver-tipped tetra Hasemania nana
  • Splash tetra Copella arnoldi
  • Spotfin tetra Hyphessobrycon socolofi
  • Spottail tetra Moenkhausia dichroura
  • Spotted tetra Copella nattereri
  • Swegles's tetra Hyphessobrycon sweglesi
  • Tailspot tetra Bryconops caudomaculatus
  • Tetra von Rio Hyphessobrycon flammeus
  • Three-lined African tetra Neolebias trilineatus
  • Tiete tetra Brycon insignis
  • Tortuguero tetra Hyphessobrycon tortuguerae
  • Transparent tetra Charax gibbosus
  • True big-scale tetra Brycinus macrolepidotus
  • Uruguay tetra Cheirodon interruptus
  • White spot tetra Aphyocharax paraguayensis
  • X-ray tetra Pristella maxillaris
  • Yellow tetra Hyphessobrycon bifasciatus
  • Yellow-tailed African tetra Alestopetersius caudalis


Footnotes