Hollandichthys

Hollandichthys
Hollandichthys multifasciatus
Hollandichthys taramandahy
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Characiformes
Family:	Acestrorhamphidae
Subfamily:	Thayeriinae
Genus:	Hollandichthys C. H. Eigenmann, 1910 [1]
Type species
Tetragonopterus multifasciatus C. H. Eigenmann & A. A. Norris, 1900 [1]

Hollandichthys is a genus of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. The fishes in this genus are 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. ^[2]

Species

Hollandichthys contains the following valid species: ^[3]

• Hollandichthys multifasciatus (C. H. Eigenmann & A. A. Norris, 1900)
• Hollandichthys taramandahy Bertaco & L. R. Malabarba, 2013 ^[4]

The genus is named for zoologist and paleontologist William J. Holland (1848-1932), Director of the Carnegie Museums of Pittsburgh. ^[5]

References

1. Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Family-Thayeriinae". Catalog of Fishes . California Academy of Sciences . Retrieved 30 October 2025.
2. Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Hollandichthys". FishBase . April 2025 version.
3. Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Hollandichthys". Catalog of Fishes . California Academy of Sciences . Retrieved 30 October 2025.
4. A new species of the characid genus Hollandichthys Eigenmann from coastal rivers of southern Brazil (Teleostei: Characiformes) with a discussion on the diagnosis of the genus. Neotropical Ichthyology, 11 (4): 767-778.
5. Christopher Scharpf (3 October 2025). "Family ACESTRORHAMPHIDAE Eigenmann 1907 (American Tetras)". The ETYFish Project Fish Name Etymology Database. Retrieved 30 October 2025.