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
Goose the ground is a "gaggle"; when in flight, they are called a "skein", a "team", or a "wedge"; when flying close together, they are called a "plump". The three living genera of true geese are: "Anser", grey geese, including the greylag goose, and domestic geese; "Chen", white geese (often included in "Anser"); and "Branta", black geese, such as the Canada goose. Two genera of geese are only tentatively placed in the Anserinae; they may belong to the shelducks or form a subfamily on their own: "Cereopsis", the Cape Barren goose, and "Cnemiornis", the prehistoric New Zealand goose. Either these or,