Coregonus trybomi is a freshwater whitefish in the family Salmonidae.
It is a spring-spawning type of cisco, which probably has evolved from sympatric vendace (Coregonus albula) independently in a number of Swedish lakes.
Only one of those populations survives, and it is therefore considered Critically Endangered by the IUCN Red List.
The status of Coregonus trybomi as a distinct species is however questionable.
[2] By Swedish authorities it is treated as a morphotype or ecotype, not an independent species.