Sciadonus galatheae is a species of fish in the family Aphyonidae.
Sciadonus galatheae is transparent or white in colour (hence the specific name, from Greek óñûìÃÂõùñ, galateia, "milk-white"), with a maximum length of . It has 88âÂÂ104 dorsal fin rays and 47âÂÂ58 anal fin rays. It has 48 precaudal vertebrae.
Sciadonus galatheae is abyssopelagic and bathypelagic, living at depths of up to . It has been found in the Celtic Sea, the Solomon Sea and in the waters off New Zealand.
Sciadonus galatheae reproduces viviparously.