Blue Ramshorn Care Guide
Planorbella duryi (Blue) · Freshwater Invert
What Blue Ramshorn look like
The Blue Ramshorn (Planorbella duryi) exhibits a distinctive, laterally compressed, coiled shell that resembles a ram's horn, characterized by its flat, spiral shape. This species can reach a maximum adult size of approximately 5-20 mm in diameter. Sexual dimorphism is not pronounced in this species; however, females may exhibit a slightly larger shell size when mature. Defensive adaptations include the ability to retract into their shell to avoid predation. Unique morphological features include a smooth, glossy shell surface that can display a vibrant blue coloration, which may vary to a pinkish-red hue in different variants. The shell lacks a pointed apex, further distinguishing it from other gastropods, and the body is adorned with a soft, translucent mantle that enhances its aesthetic appeal in aquatic environments.
Behavior & temperament
The Blue Ramshorn is primarily a benthic organism, often found grazing on surfaces within the substrate or on aquatic plants. It exhibits a solitary to semi-social behavior, occasionally forming loose aggregations in favorable environments. This species is not an obligate schooler but can coexist with others of its kind in a communal setting. Breeding behavior involves egg scattering, where females lay clusters of eggs on surfaces, leading to prolific reproduction. The temperament is generally peaceful, making them suitable for community tanks, and they display minimal aggression towards tank mates.
Diet & feeding
In the wild, the Blue Ramshorn is an omnivore, feeding on detritus, algae, and decaying plant matter. In captivity, they require a varied diet that includes high-quality algae wafers, blanched vegetables, and occasional protein sources such as spirulina flakes or fish food to ensure optimal health.
Behind the name
Planorbella (flat disk); duryi (named after the American naturalist, William Dury).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Blue Ramshorn?
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