Fathead minnow

The fathead minnow (Pimephales promelas), is a species of temperate freshwater fish belonging to the Pimephales genus of the cyprinid family. The natural geographic range extends throughout much of North America, from central Canada south along the Rockies to Texas, and east to Virginia and the Northeastern United States.[1] This minnow has also been [...]

Common goldfish

Common goldfish are a type of goldfish with no other modifications from their ancestors other than their color. Most varieties of fancy goldfish were derived from this simple breed. Common goldfish come in a variety of colours including red, orange/gold, white, black and yellow or ‘lemon’ goldfish.

As petsThe common goldfish became a popular pet [...]

Fantail (goldfish)

The Fantail goldfish is the western form of the Ryukin that possesses an egg-shaped body, a high dorsal fin, a long quadruple caudal fin, and no shoulder hump.[1][2]
DescriptionThe Fantail goldfish may have either metallic or nacreous scales and normal or telescope eyes. Its finnage are less well developed than the Ryukin. It supports double [...]

Oranda

An oranda is a fancy goldfish characterized by a prominent raspberry-like hood encasing its head. The hood or headgrowth (also known as wen in Chinese) encases the whole head except for the eyes and mouth.[1][2][3]
DescriptionDue to the fleshy outgrowth on the top of its head and sides of its face, the oranda has become [...]

Cardinal tetra

The cardinal tetra, Paracheirodon axelrodi, is a freshwater fish of the characin family (family Characidae) of order Characiformes. It is native to the upper Orinoco and Negro Rivers in South America.Growing to about 3 cm (1.25 in) total length, the cardinal tetra has the striking iridescent blue line characteristic of the Paracheirodon species laterally [...]

Black neon tetra

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 is of typical elongated tetra appearance; it is of plain basic coloration but with two distinct, adjacent longitudinal stripes, white above black. The eye [...]

Green neon tetra

The green neon tetra (Paracheirodon simulans) is a freshwater fish of the characin family (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 [...]