The bloodfin tetra is a species of characin from the Paraná River basin in South America. The bloodfin is a relatively large tetra, growing to 5.5 cm. Its notable feature is the blood-red colouration of the tail, dorsal, anal and adipose fin, while the body is silver in color.

White skirt tetras are schooling fish, who need to be kept in groups of six or more. ... These tetras are usually peaceful, but should be classed as semi-aggressive due to their tendency to fin-nip. Avoid housing them with slow-moving fish who have long, flowing fins, such as angelfish or guppies.

The black ghost knifefish is a tropical fish belonging to the ghost knifefish family. They originate in freshwater habitats in South America where ranging from Venezuela to the Paraguay–Paraná River, including the Amazon Basin. They are popular in aquaria.

Silvertip tetra is a species of characid freshwater fish native to streams and creeks in the São Francisco basin in Brazil, but frequently kept in aquariums. Silvertip tetras are slightly more aggressive than other comparable smaller tetras, observed occasionally to nip other similarly sized tetras.  

M. boesemani is also available in the aquarium hobby, where it is prized for its excellent colors and peaceful demeanor. The color pattern is completely different from most other forms of rainbowfish, as it has a half orange-red rear and a bluish-grey or purple front which in some specimens is almost defined perfectly. M. boesemani will often grow to lengths that exceed 10 cm (3.9 in) if given the right food and water conditions. Like most rainbowfish they are capable of adjusting their color intensity. Their color intensity may be a sign of mood or health. Generally more intense is seen during night time. They are kept best in groups due to their community and friendly nature and can be easily kept with many different species of fish, including some tetras. They are relatively hardy fish that prefer weakly alkaline pH conditions. Good tankmates include other rainbowfish, barbs, tetras, corydoras, snails, gouramis, danios, discus, guppies, swordtails, and loaches. However, smaller freshwater shrimps in the genera Caridina and Neocaridina may be viewed as prey. Ghost shrimp, vampire shrimp, amano shrimp, and bamboo shrimp can live with them. Always adult shrimps have added first then baby rainbowfish. Care must be taken to give hiding places for shrimp and open spaces for rainbowfish.

The Red Oranda is a metallic-scaled fish. Resembling the Veil Tail varieties, the Red Oranda's distinction is in its color and the "hood" that covers its head. In the case of the Red Oranda, the entire body and hood are a bright red or orangish-red. All Goldfish are members of the carp group and generally quite hardy.

[embedyt] https://www.youtube.com/watch?v=v7gCFE9pHW0[/embedyt]   The electric yellow African cichlid is also known colloquially as the yellow lab or electric yellow lab. Considered a newer species and referred to commercially as Labidochromis tanganicae, this cichlid lives in the waters of Lake Malawi between the islands of Charo and Mbowe.

Polar Blue Parrot Cichlids are a hybrid fish that is the result of a successful spawn between the convict cichlid and the parrot cichlid. they require an aquarium of at least 200 litres, with a sandy bottom, rocks and plenty of hiding places among the rocks.

Platinum Angelfish have been rare and difficult to find, but we usually have them in our aquariums. … But Angels are now found living in aquariums throughout most of the world. There are many color variations for sale in this store.

The Congo tetra is a species of fish in the African tetra family, found in the central Congo River Basin in Africa. It is commonly kept in aquaria

The oscar is a species of fish from the cichlid family known under a variety of common names, including tiger oscar, velvet cichlid, and marble cichlid. In tropical South America, where the species naturally resides, A. ocellatus specimens are often found for sale as a food fish in the local markets