''Cyanogaster geisleri'' is a small, transparent fish, found in the Central Amazon, Brazil. It grows to a maximum size of and a weight of . The generic name honours Dr. Rolf Geisler (1925–2012),

aquarist An aquarist is a person who manages aquariums, either professionally or as a hobby. They typically care for aquatic animals, including fish and marine invertebrates. Some may care for aquatic mammals. Aquarists often work at public aquariums. They ...

and Professor at the

University of Freiburg The University of Freiburg (colloquially ), officially the Albert Ludwig University of Freiburg (), is a public university, public research university located in Freiburg im Breisgau, Baden-Württemberg, Germany. The university was founded in 1 ...

, who collected the

holotype A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of s ...

and made it available for

species description A species description is a formal scientific description of a newly encountered species, typically articulated through a scientific publication. Its purpose is to provide a clear description of a new species of organism and explain how it diff ...

References

Freshwater fish of Brazil Taxa named by Axel Zarske Taxa named by Jacques Géry Fish described in 2007 Characidae {{Characidae-stub