The Black Mystery Snail (Pomacea diffusa, formerly known as Pomacea bridgesii.), also referred to as "apple" snails, are a popular tropical aquarium snail species. "Black" mystery snails have light brown shells with dark brown stripes, and black bodies.
These snails are easy to care for and will thrive under many conditions. These animals only live 1-2 years on average. They are an omnivore that will eat any leftover food or dead plant matter in your aquarium. They will eat algae off of surfaces such as glass, but nerite snails tend to be a better option for algae consumption. They thrive in a variety of temperatures, from the high 60's to low 80's. They typically require a minimum of 5 gallons, as they only reach 2 inches maximum.
These snails can be kept with other community fish species. It's best to keep them with non-aggressive community fish; even though these animals are generally well protected by their shell, semi-aggressive tankmates can bite the snail's antennae or body. They can be kept with some semi-aggressive species, like danios, if they tend to occupy the top layers of the tank.