Last updated on April 23, 2014 at 20:10 EDT

Tetras Reference Libraries

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Black Tetra Gymnocorymbus ternetzi
2013-10-18 12:27:31

The Black Tetra (Gymnocorymbus ternetzi), known also as the Black Skirt Tetra, High-fin Black Skirt Tetra, and the Black Widow Tetra, is a freshwater fish belonging to the characin family Characidae. It is native to the Paraguay and Guapore River basins of southern Brazil, Argentina, and Bolivia. Achieving lengths of about 2.5 inches in total length, the Black Tetra has a tetragonal body...

Green Neon Tetra
2008-05-01 00:19:01

The Green Neon Tetra (Paracheirodon simulans), is a freshwater fish of the characin family Characidae of order Characiformes. It is native to the upper Orinoco and Negro Rivers in South America. This fish is similar in appearance to the closely-related and better-known neon tetra, but it is slightly smaller and its red patch is less pronounced, while the blue-green areas of the upper body...

Dogteeth tetra
2007-04-05 00:44:57

Cynodontidae fishes (order Characiformes), or Dogteeth tetras, are a family of freshwater fishes found in the Neotropics. They have a very peculiar shape, and their name derives from their elongated and well developed canines which they mainly use to eat other fish. Their pectoral fins are also expanded. This group is not very diverse, and includes only five genera and 14 species. Most of...

2007-03-29 14:37:34

Pterophyllum is a small genus of freshwater fish from the family Cichlidae known to most aquarists as angelfish. All Pterophyllum species originate from the Amazon River basin in tropical South America. The three species of Pterophyllum are unusually shaped for cichlids being greatly laterally compressed, with round bodies and elongated triangular-shaped dorsal and anal fins. This body shape...

Cave tetra
2007-03-26 13:47:14

Astyanax jordani is a freshwater fish of the Characin family (family Characidae) of order Characiformes, native to Mexico. It is often referred to by its local Spanish name Sardina Ciega but is more commonly called the Cave tetra. A blind cave fish, A. jordani is a recent evolution from the Mexican tetra (A. mexicanus). While it can be confused with the blind cave form of A. mexicanus, it...

Lemon tetra
2007-03-26 13:42:48

The Lemon tetra, Hyphessobrycon pulchripinnis, is a species of tropical freshwater fish which originates from South America, belonging to the family Characidae. It is a small tetra which grows to (5 cm) in length. The species is a long established favorite aquarium fish, being introduced to the aquarium in 1932. Physical Description The lemon tetra is one of the deeper-bodied tetras,...

Black phantom tetra
2007-03-26 13:31:53

The Black phantom tetra (Hyphessobrycon megalopterus) is a freshwater fish of the characin family (family Characidae) of order Characiformes. It is native to the Paraguay, Guaporé, and Mamore basins in Brazil and Bolivia. This fish is of roughly tetragonal shape and is light gray in coloring, with a black patch surrounded by iridescent silver edging posterior of the gills on each side....

Black neon tetra
2007-03-26 13:27:23

The Black neon tetra (Hyphessobrycon herbertaxelrodi) is a freshwater fish of the characin family (family Characidae) of order Characiformes. It is native to the Paraguay basin of southern Brazil. This species has the typical elongated tetra appearance; it is of basic coloration but with two distinct, adjacent longitudinal stripes, white above black. The eye has two thin but distinctive...

Neon tetra
2007-03-26 13:26:20

Paracheirodon is a genus of freshwater fish in the characin family (family Characidae) of order Characiformes. The type species is Paracheirodon innesi, the well-known neon tetra, and the Paracheirodon species are among the fishes known as tetras. All species of this genus are native to the Neotropic ecozone, occurring in several rivers and streams in northern South America. The...

African tetra
2007-02-13 15:09:26

African tetras (family Alestiidae) are a group of Characiformes fish exclusively found in Africa.