Quilted melania snail

Geographical Origin and Habitat: The Quilted Melania (*Tarebia granifera*) is an incredibly robust, subterranean freshwater gastropod natively endemic to the warm, shallow streams, coastal estuaries, and heavily vegetated marshes of Southeast Asia and India. Due to its extreme adaptability, it has become a highly successful invasive species globally. Their natural biotope is defined by slow-moving water over deep, soft, nutrient-rich substrates, where they spend the majority of their time buried, foraging for microscopic organic detritus.

Taxonomy: Scientifically classified within the Thiaridae family, they are very closely related to the famous Malaysian Trumpet Snail (MTS) and share a similar conical morphology. Fully mature adults reach 2.0 to 2.5 centimeters (0.8-1.0 inches) in length. While they possess a similar elongated, spiral cone shell with a hard operculum (trapdoor), the Quilted Melania is distinctly wider and shorter than the MTS. Their defining feature is their highly textured shell, covered in distinct nodules or "bumps" giving it a quilted appearance.

Social Behavior: They are peaceful, highly industrious, and primarily subterranean scavengers. Like the MTS, they are exceptional burrowers and provide a massive biological benefit to planted aquariums by constantly churning, aerating, and cleaning the sand bed, preventing the formation of toxic anaerobic gas pockets. They are significantly more active during the day than the strictly nocturnal MTS, frequently emerging from the substrate to patrol the lower levels of the aquarium glass and hardscapes.

Coloration and Sexual Dimorphism: Like their Thiaridae cousins, the Quilted Melania reproduces almost exclusively via parthenogenesis (cloning by females), entirely eliminating visual sexual dimorphism. Their highly textured, bumpy, conical shell is an exercise in natural camouflage. The base coloration is incredibly variable, ranging from light yellowish-tan to deep mahogany brown, often heavily speckled or banded with dark reddish-brown markings. The distinct nodules (the "quilting") on the shell whorls catch the light beautifully.

Tank Setup: The aquarium architecture requires very few specific accommodations, but the substrate is absolutely critical to their biology. To allow them to burrow and aerate the tank, a fine sand or very smooth, fine gravel substrate of at least 1.5-2.0 inches deep is unconditionally mandatory. Sharp, coarse gravel will prevent them from burying and cause stress. They do not require a tight lid, as they possess zero instinct to climb above the waterline.

Diet and Feeding: They are ravenous, heavy-duty detritivores and highly efficient substrate cleaners.

CRITICAL CLARIFICATION: They absolutely DO NOT eat live, healthy aquarium plants; they heavily benefit them by aerating the roots. They strictly consume soft green algae, diatoms, decaying plant matter, and massive amounts of uneaten fish food that sinks into the sand. Their population size is entirely dependent on food availability; severe overfeeding will trigger an explosive population boom.

Water Quality: They are nearly indestructible extremophiles. They can tolerate slightly brackish water, severe anoxic conditions, and immense spikes in Ammonia. However, to maintain the intricate, bumpy texture of their shells, they strictly prefer moderately hard to very hard water (GH 8-25, pH 7.2 - 8.5) rich in dissolved calcium. Keeping them in acidic water (below pH 6.8) will not instantly kill them, but the sharp tips and distinct nodules of their shells will slowly dissolve, turn white, and erode away.

Compatibility and Tankmates: Compatibility is universal. Their thick, hard, bumpy shell and protective trapdoor make them highly resistant to minor predation. They are the perfect, harmless cleanup crew for peaceful community tanks, planted setups, and shrimp breeding tanks. However, they will be hunted and eaten by specialized snail-eaters. Assassin Snails (*Clea helena*) will actively hunt them. Large, specialized Loaches (Clown, Yoyo) will aggressively dig them out of the sand and crack their shells.

Aquarium Breeding: Breeding is immediate, explosive, and unstoppable. Because they reproduce via parthenogenesis (cloning) and are livebearers (giving birth to fully formed miniature snails rather than laying eggs), introducing just ONE single snail guarantees a massive colony. They are considered a highly beneficial "pest" snail. The population is 100% dictated by how much you feed your fish: if you overfeed, the substrate will rapidly become overwhelmed with thousands of Quilted Melania clones.

Risks and Diseases: The absolute greatest risk to the aquarist is a massive, visually overwhelming population explosion caused entirely by severe overfeeding. The greatest physical risk to the snail is severe shell degradation (especially the loss of their distinct shell nodules) if kept in highly acidic, soft water. Chemical copper treatments (used for fish parasites) are immediately and brutally lethal, and a massive die-off of hundreds of these snails buried deep in the sand will crash the tank's biological cycle.