What is a baby prawn called?

An alien ship arrived over Johannesburg, South Africa more than twenty years ago. Discovered aboard the ship were numerous malnourished alien-beings referred to as Prawns, due to their Prawn-like appearance (racism has never been particularly inventive). With the world's eyes on the South African government, the mostly-peaceful aliens were segregated from the human population and held in an area designated District 9. When these alien procreate they produce what is known as a "baby prawn".

There are few pictures of baby prawns available on the internet but you can refer to this picture of an adult, just picture it smaller: http://cache.gawker.com/assets/stills/districtnineplot_io9.flv.jpg