The Spiny Star Astraea Snail is a striking algae-eater with a distinctive pyramid-shaped shell featuring green, yellow, and tan tones. This herbivore excels at consuming hair algae, cyanobacteria, and diatoms while cleaning live rock and aquarium glass. Best suited for established tanks with ample hiding spaces, it requires careful handling due to difficulty righting itself if overturned. Sensitive to copper medications and high nitrate levels, this snail demands gradual acclimation and may need supplemental vegetable-based foods if algae is scarce.