It was stated by Dr Parnell, that in Lochlomond are found two species of Coregonus, one of which he believes to be an undescribed species, and the other, which was first noticed by Lacépède under the name of Coregonus Clupeoide, has been confounded by British naturalists with the Coregonus Laveretus, or Ulswater Gwyniard.

From Lacépède's short and imperfect description of the Coregonus Clupeoide of Lochlomond, and as two species are now found inhabiting the same locality, it is impossible to state with a certainty as to which of the species he alludes; therefore the name of Coregonus Lacepedei was proposed for the one species, and that of Coregonus microcephalus for the other, as illustrative of the species.