Crustacean larva stop after a single copepodid stage. Once the gonads develop, there are no further moults. Chalimus (plural chalimi) is a stage of development of a copepod parasite of fish, such as the salmon louse ("Lepeophtheirus salmonis"). "Chalimus" Burmeister, 1834 is also a synonym for "Lepeophtheirus" Nordmann, 1832. The single genus in the Facetotecta, "Hansenocaris", is only known from its larvae. They were first described by Christian Andreas Victor Hensen in 1887, and named "y-nauplia" by Hans Jacob Hansen, assuming them to be the larvae of barnacles. The adults are presumed to be parasites of other animals. Crustacean larva Crustaceans may
Red-breasted goose Red-breasted goose The red-breasted goose ("Branta ruficollis") is a brightly marked species of goose in the genus "Branta" from Eurasia. It is sometimes separated in "Rufibrenta" but appears close enough to the brant goose ("Branta bernicla") to make this unnecessary, despite its distinct appearance. It is currently classified as vulnerable by the IUCN. "Branta" is a Latinised form of Old Norse "Brandgás", "burnt (black) goose and "ruficollis" is from the Latin "rufus" "red" and "collis" "necked". All the species of the genus "Branta" are distinguished by their dark sooty colour, relieved by white, and as a distinction from the grey