rockpool shrimp, palaemon elegans, saltwater decapod crustacean, look for food with its periopods and antennas

actinia active adult algae animal antenna antennas aqua aquaculture aquarium aquascape aquatic atlantic background biodiversity biotope black clear closeup colorful concept covered crustacean decapod decorative design ecology elegans environment equina exotic fauna fishkeeping food free friendly green instinct invasion invasive its life littoral live look macro marine natural nature ocean organism palaemon periopods red reef rockpool saltwater sand sea shrimp space sponge sponges stones tank underwater water widespread wild zone