Robert Herbert Carcasson (5 December 1918 in Cheltenham, UK – 23 September 1982 in Victoria, B.C., Canada) was an English entomologist who specialised in butterflies, but also authored two field guides to tropical fishes.
He joined the Coryndon Museum, Nairobi, as senior entomologist in 1956.
In 1972 he travelled in Polynesia, Melanesia, Australia, Malaysia, Sri Lanka, Seychelles and East Africa for production of two field guides to coral reef fish of the Indo-Pacific region.
Somewhat of a polymath, he was fluent in a number of languages, and produced the illustrations to a number of his works, culminating in hundreds of colour and line drawings of fishes for his reef fish field guides.
[1][2] A further collection of Carcasson's works may be found in the Biodiversity Heritage Library online.