Size: Eastern king prawns to 30cm body length (commonly 14 - 21cm) Average commercial weight is about 50g. Season: All year, the main catches are March to November. As we get more into the season the higher percentage of larger size prawns increase, the start of the season see a higher percentage of the smaller sizes - 10/15 & 16/20. Brand: The brand name is normally the name of the fishing boat, a standard carton is used and the name of the boat on the carton with catch dates etc. Show More