Complex sentence: In biological terms, shrimps and prawns belong to different suborders of Decapoda, however they are very similar in appearance and in commercial farming and fisheries, the terms are often used interchangeably.
Split into simpler sentences: In biological terms shrimps and prawns belong to different suborders of Decapoda. In commercial farming and fisheries, the terms "shrimp" and "prawn" are often used interchangeably.