
Identify This… Rissoid And Pyramidellid Snails By: Ronald L. Shimek, Ph.D. Figure 1. The bane of many aquarists: a pyramidellid snail that parasitizes trochoidean snails such as Astraea species. Introduction: For many aquarists the appearance in their systems of tiny white to tan snails, much smaller than a rice grain, is a cause for concern. This concern is definitely warranted… [Read More]