The Lava Snail, classified under the species Faunus sp. 'magma', is a striking and relatively uncommon freshwater snail known for its distinctive appearance. It is often sought after by aquarists who are interested in adding a unique and visually appealing clean-up crew member to their aquariums.

Lava Snails are characterized by their dark, almost black shells that have a rugged, conical shape, resembling the rough textures and colors of volcanic rock—hence the name "Lava Snail." This rugged exterior not only provides excellent camouflage amongst rocks and substrates but also adds a dramatic aesthetic to the tank environment.

In terms of care, Lava Snails are relatively easy to maintain, making them suitable for both novice and experienced aquarists. They thrive in a variety of freshwater setups, from community tanks to species-specific setups. One of their main requirements is a tank with stable water conditions, including a pH that is slightly acidic to neutral and moderate hardness to ensure the health of their shells.

These snails are known for their hardy nature and ability to adapt to different environments. However, they do best in tanks with ample hiding spots and plenty of surface area to graze on. Lava Snails are excellent algae eaters, feeding primarily on the biofilm, algae, and decaying plant matter that accumulate on the surfaces within the aquarium. This diet makes them not only a beautiful addition to the aquarium but also a functional one, as they help keep the tank clean by consuming unwanted algae and detritus.

Lava Snails are also relatively peaceful and can coexist with a wide variety of fish and other invertebrates. However, care should be taken to house them with species that will not prey on or harass them, as their slow movement can make them an easy target for more aggressive tank mates.

Breeding Lava Snails in captivity can happen, but it's not overly common due to their specific reproductive needs, which can be challenging to replicate in an aquarium setting. They typically lay their eggs in clutches, attaching them to hard surfaces where they remain until they hatch.

Conservation concerns for Lava Snails include habitat destruction and pollution in their native habitats. Sustainable practices in the aquarium trade are essential to ensure that populations in the wild are not depleted. Responsible breeding and trade can help maintain healthy populations both in the wild and in captivity.

Overall, Lava Snails offer a unique opportunity for aquarists to diversify their tank with a creature that is not only visually appealing but also beneficial for the aquarium ecosystem. Their ease of care, coupled with their utility in algae control, makes them a valuable addition to any freshwater aquarium.