The second species is large enough to make human eating worthwhile. They are easy to keep in a properly established aquarium, where they will scavenge for food. Visitors are frequently fascinated by their complex behaviour and feeding habits. The Bullhead , Taurulus bubalis , will ambush this crustacean, and diminish a population kept in the same aquarium. Only newly moulted prawns fall victim to Beadlet Anemones .
Live prawns are the second most important natural food.
Many aquarists keep a spare tank to ensure a supply throughout the Winter, when they are found in deeper water offshore. Freshly killed prawn is sometimes accepted by difficult species that refuse Mussel. They are quickly attacked by a wider range of fish and crabs than the Prawn. Because of this, the introduction of a net full of Shrimps will start an amusing feeding frenzy. They provide excellent live food.