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
Small cackling goose Small cackling goose The small cackling goose (Branta hutchinsii minima), also known as the Ridgway's goose, is the smallest subspecies of cackling goose and the smallest variant of white-cheeked goose. "Ridgway’s geese" are the smallest of the white cheeked geese and the second smallest goose in the genus Branta, following the red-breasted goose. It is only slightly larger than a mallard and has a culmen (bill) length of 32 mm. The small cackling goose’s calls are described as high pitched yelps. In flight, it can be identified by its fast wingbeat, in contrast to Canada geese and the larger subspecies