George Albert Boulenger was a Belgian-British zoologist who described and gave scientific names to over 2,000 new animal species, chiefly fish, reptiles, and amphibians. Boulenger was also an active botanist during the last 30 years of his life, especially in the study of roses.
Astyanax jordani is a freshwater fish of the characin family of order Characiformes, native to Mexico. It is sometimes called the cave tetra, or by its local Spanish name sardina ciega.
The diamond tetra is a small freshwater fish of the characin family of order Characiformes. It is found in and around Lake Valencia in Venezuela, South America.
Cheirodon is a genus of characins occurring in South America. Of the 10 currently described species; one, C. jaguaribensis, is placed here as a convenience, as its actual position in Characidae is unknown.
Cheirodon kiliani is a species of fish in the family Characidae endemic to Chile.
The ember tetra is a freshwater fish of the characin family of order Characiformes. It is native to the Araguaia River basin of Brazil and was discovered in 1987 and named in honor of the fish explorer Heiko Bleher's mother.
The Costello tetra is a species of characin from the Amazon basin and is found in Brazil and Peru. The specific name comes from Lake Hyanuary in Brazil. Other common names used in English are January tetra and green neon. The name "green neon" is also used for Paracheirodon simulans.
The gold tetra, or Rodway's tetra is a species of small freshwater fish in the family Characidae native to lowland South America, where they are abundant in coastal floodplains. Their name comes from a powdery golden tint on their body that is thought to be caused by internal parasites. Gold tetras are peaceful, hardy, schooling community fish. Gold tetras have been successfully bred in captivity.
Bario steindachneri is a species of characin from Brazil and Peru. It is the only member of the genus Bario. It is found in a freshwater environment within a pelagic depth range in a tropical climate.
Carlana is a genus of freshwater fish in the family Characidae. It contains the single species Carlana eigenmanni, which is found in Costa Rica, Nicaragua and Panama. The maximum standard length is 5.4 centimetres (2.1 in).
Hollandichthys is a genus of characins endemic to rivers and streams in southern and southeastern Brazil from Rio Grande do Sul to Rio de Janeiro. These are small fish that reach up to 9.6 cm (3.8 in) in standard length. The currently recognized species in this genus are:
Psellogrammus is a genus of freshwater fish in the family Characidae. It contains the single species Psellogrammus kennedyi, which occurs in Argentina, Brazil, and Paraguay. It is found in the Paraguay and São Francisco River basins.
Schultzites is a genus of freshwater fish in the family Characidae. It contains the single species Schultzites axelrodi, which is endemic to Colombia, where it is found in the upper Meta River basin.
Petitella bleheri is a species of characin found in Amazon Basin in Brazil and Peru. It is one of three species commonly referred to as the rummy-nose tetra, and is also known as the firehead tetra.
Eretmobrycon is a genus of characins found in Central and South America.
Hyphessobrycon agulha is a species of tetra in the family Characidae. As a freshwater fish, it inhabits the basin of the Madeira River in Brazil along with parts of Peru and Bolivia, and it reaches a maximum length of 4.3 centimetres (1.7 in). Though it is mainly found in the wild, it is occasionally kept by fishkeepers and is sometimes confused with the neon tetra. The fish is primarily an insectivore, though it does eat vegetable matter. It is considered to form a group with other species in Hyphessobrycon as they share a dark stripe running lengthwise.
Hyphessobrycon arianae is a species of tetra in the family Characidae. It is native to the Paraná River basin. It can grow to a length of about 2.5 centimetres (0.98 in).
Hyphessobrycon axelrodi is a species of tetra in the family Characidae.
Pristella crinogi is a freshwater fish in the family Characidae of the order Characiformes. It is a tropical fish. It resides in the basins of the Tocantins River and São Francisco River.
Hyphessobrycon copelandi is a species of South American tetra, belonging to the family Characidae. They are gray in coloration with a faint black humeral spot. Their dorsal, pectoral, and anal fins are white fronted. It is known to reach a length of 3.5 centimetres (1.4 in). Hyphessobrycon copelandi is known to live in the Solimões, Mana, and Approuague River Basins. It is most often found in slow moving waters or areas in creeks with a counter current. It inhabits the upstream part of the river before waterfalls. They have seen limited use in the fish trade, even having a common name in German, federsalmler, which translates to "feather tetra". As a benthopelagic fish, they reside away from the surface of the water.
