Characins (tetras)

Black Emperor Tetra (Nematobrycon palmeri)Black Emperor Tetra (Nematobrycon palmeri)
A very attractive fish that can be easily sexed. The males are known to have a spike in the middle of the caudal fin. Gives it the appeara...
Black Neon Tetra (Hyphessobrycon herbertaxelrodi)Black Neon Tetra (Hyphessobrycon herbertaxelrodi)
Black Neon Tetras are schooling fish. They prefer schooling with a minimum of five fish. Black Neons are very peaceful fish. When scared the...
Black Phantom Tetra (Hyphessobrycon megalopterus)Black Phantom Tetra (Hyphessobrycon megalopterus)
Full bodies with black diamond shape surrounded with a green or silver outline. The males can turn dark when mating or defending its territ...
Black Tetra (Gymnocorymbus Ternetzi)Black Tetra (Gymnocorymbus Ternetzi)
This fish is somewhat oval-shape. Young are more attractive than adults. The main body color is dark gray to black while the fins are black....
Blind Cave Fish (Astyanax jordani)Blind Cave Fish (Astyanax jordani)
The baby Blind Cave Fish are actually born with eyes, but if the fry are raised in complete darkness as they would be in nature, the eyes wi...
Bloodfin Tetra (Aphyocharax anisitsi)Bloodfin Tetra (Aphyocharax anisitsi)
This fish is great for beginners because it is long lived, undemanding and very easy to keep. Plant the tank with Valisneria, leaving enough...
Blue Tetra (Boehlkea fredcochui)Blue Tetra (Boehlkea fredcochui)
An extremely active shoaling fish. This species is best maintained in groups of six or more in a large tank. It is generally peaceful in pro...
Dawn Tetra (Aphyocharax paraguayensis)Dawn Tetra (Aphyocharax paraguayensis)
A rare species in the trade, the Rio Paraguay Tetra is usually only encountered accidentally when it appears as contaminant in a shipment of...
Discus Tetra (Brachychalcinus orbicularis)Discus Tetra (Brachychalcinus orbicularis)
This is a rare, yet beautiful species. Side-lighting will bring out the green, violet, and pink hues on its otherwise silver body. This spec...
Garnet Tetra (Hemigrammus pulcher)Garnet Tetra (Hemigrammus pulcher)
The garnet has the typical diamond shape shared with many other tetras. It grows to about 2 inches in length and has slightly translucent s...
Green Fire Tetra (Aphyocharax rathbuni)Green Fire Tetra (Aphyocharax rathbuni)
A relatively hardy tetra. Should be kept in schools of at least 6, in a tank of at least 10 gallons....
Jumping Characin (Copella arnoldi)Jumping Characin (Copella arnoldi)
These tetras are schooling fish, and should be kept in groups of at least six to prevent the fish from becoming timid and stressed. They lik...
Lemon Tetra (Hyphessobrycon pulchripinnis)Lemon Tetra (Hyphessobrycon pulchripinnis)
Lemon Tetras have clear, yellow bodies. The dorsal and anal fins are edged with black. The front of these two fins are yellow. The eye is to...
Marbled Hatchetfish (Carnegiella strigata)Marbled Hatchetfish (Carnegiella strigata)
The Marbled Hatchetfish is generally easy to care for. Prefers a tank with plenty of overhead plant cover....
Neon Tetra (Paracheirodon innesi)Neon Tetra (Paracheirodon innesi)
Easily the most popular fish of all aquarium fishes. The Neon Tetra was a very exciting addition to the aquarium hobby when first introduced...
Penguin Tetra (Thayeria boehlkei)Penguin Tetra (Thayeria boehlkei)
The Penguin Tetra is a long thin fish that is named because of the vertical black line that runs down its side, all the way to the end of it...
Red Bellied Pacu (Colossoma macropomum)Red Bellied Pacu (Colossoma macropomum)
The Red Bellied Pacu is a cousin of the pirannah. Unlike the pirannah, the Pacu prefers vegetation to live foods. The Red Bellied Pacu gro...
Red Bellied Piranha (Pygocentrus nattereri)Red Bellied Piranha (Pygocentrus nattereri)
These are highly aggressive fish with razor sharp teeth. Do not hand feed these fish as a quick trip to the hospital may be the result. If ...
Silver Dollar (Myletes rubripinnis)Silver Dollar (Myletes rubripinnis)
As schooling fish, silver dollars do well in groups of 4 or more. The physical appearance of the silver dollar is basically round with the ...
View All Fish Profiles

About Characins (tetras)

Neon Tetra
Characins are very popular aquarium fish because they are generally hardy, colorful and do well in community tanks. Some of the most popular types of characins are the tetras. The photo above is of a neon tetra. Click any profile to the left to view one of these great aquarium fish.