exotic baltic prawn, palaemon adspersus, saltwater decapod crustacean in dense green ulva algae search for food

active adspersus adult algae animal antennas aqua aquaculture aquadesign aquascape aquatic background baltic biodiversity biotic biotope black clear crustacean decapod decorative dense design discovery ecology edible environment exotic fascinating fauna fishkeeping food free friendly funny glass green instinct invasion invasive its life macro marine natural nature organism palaemon periopods pet prawn reef resistant saltwater sand sea search shrimp space tank transparent ulva underwater vulnerable water widespread wild