Chelidonura varians

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Chelidonura varians – Sea Slug that Eats Flatworms

Chelidonura varians is a fascinating sea slug, with a black body lined with electric blue or white. From the family Aglajidae, it is especially known for its exceptional ability to naturally regulate flatworms in reef aquariums. Unlike other chemical methods, its action is 100% biological and respectful of your ecosystem.

An Elegant Flatworm Hunter

With an elongated and flexible body, Chelidonura varians moves gracefully over sand and live rocks. It hunts flatworms, especially red flatworms (type *Convolutriloba*), which are often responsible for unsightly and problematic invasions. Thanks to its specialized diet, it provides a natural solution against these pests while adding a unique visual touch to the tank.

Maintenance Conditions

• Recommended minimum volume: 100 liters
• Temperature: 24°C to 27°C
• pH: 8.0 to 8.4
• Water flow: moderate
• Decor: sandy areas + live rocks

It is preferable to introduce Chelidonura varians only if flatworms are present in the aquarium. Indeed, its diet is very specific, and in the absence of natural prey, it risks perishing.

Behavior and Compatibility

This slug is harmless to fish, corals, and other invertebrates. It moves mainly during the day or at dusk. It does not emit any toxins and can coexist with most reef species. It will appreciate well-cycled, mature aquariums rich in microfauna and stable conditions.

Arrival Recommendations

Slow drip acclimation is mandatory. Avoid exposing it to open air. Like all slugs, it is sensitive to parameter variations, especially salinity. Handle with care, never exposing it to strong currents or direct suction intake.

Why Choose Chelidonura varians?

• Natural solution against flatworm invasions
• Unique aesthetics with its electric blue reflections
• Compatible with any well-matured reef aquarium
• Biological alternative to chemical treatments
• Peaceful and discreet specimen, respectful of the decor

Chelidonura varians is a valuable ally for aquarists keen on maintaining a clean and balanced aquarium without resorting to aggressive treatments. Its natural elegance and regulatory function make it a species that is as useful as it is attractive.