Charles Tate Regan

Charles Tate Regan FRS (1 February 1878 – 12 January 1943) was a British ichthyologist, working mainly around the beginning of the 20th century. He did extensive work on fish classification schemes.
Born in Sherborne, Dorset, he was educated at Derby School and Queens' College, Cambridge and in 1901 joined the staff of the Natural History Museum, where he became Keeper of Zoology, and later director of the entire museum, in which role he served from 1927 to 1938.
Regan was elected Fellow of the Royal Society in 1917.
Regan mentored a number of scientists, among them Ethelwynn Trewavas, who continued his work at the British Natural History Museum.
Among the species he described is the Siamese Fighting Fish Betta splendens. In turn, a number of fish species have been named regani in his honour:
Anadoras regani
Apistogramma regani
Apogon regani
Astroblepus regani
Callionymus regani
Cetostoma regani
Crenicichla regani
Diaphus regani
Engyprosopon regani
Gambusia regani

Hemipsilichthys regani
Holohalaelurus regani
Hoplichthys regani
Hypostomus regani
Julidochromis regani
Lycozoarces regani
Neosalanx regani
Salvelinus inframundus
Symphurus regani
Trichomycterus regani
Tylochromis regani
Vieja regani
Zebrias regani

^ a b Burne, R. H.; Norman, J. R. (1943). "Charles Tate Regan. 1878-1943". Obituary Notices of Fellows of the Royal Society. 4 (12): 411. doi:10.1098/rsbm.1943.0012.