Common name: True Whelks

Pisaniidae, commonly referred to as True Whelks, are a family of marine gastropods that are highly valued in the reefkeeping hobby for their utility and fascinating behavior. These snails are often appreciated for their role as scavengers, helping to maintain the cleanliness of aquariums by consuming detritus, uneaten food, and decaying organic matter. Their robust shells and varied patterns make them visually appealing additions to marine tanks, adding both aesthetic and functional value.

True Whelks are carnivorous by nature, and while they are beneficial scavengers, aquarists should be cautious about their potential to prey on other invertebrates, such as small clams or other mollusks, if food sources are scarce. They are best suited for fish-only or predator tanks rather than delicate reef setups, as they may disturb or consume sessile invertebrates. Their activity level and burrowing behavior can also help aerate the substrate, contributing to a healthier tank environment.

These snails thrive in aquariums with stable water parameters and moderate water flow. They require a sandy or mixed substrate to mimic their natural habitat, where they can burrow and forage. Feeding them is straightforward, as they will readily accept meaty foods such as shrimp, fish, or specialized carnivorous invertebrate diets.

From a scientific perspective, Pisaniidae are part of the Buccinoidea superfamily and are widely distributed in marine environments worldwide. Their adaptability and ecological role as scavengers make them an interesting subject of study in marine biology. For aquarists, understanding their natural behaviors and dietary needs is key to successfully integrating them into a home aquarium.