👉 Bdellodrilus is a genus of small, freshwater mollusks that are commonly found in the aquarium hobby and as pets due to their viviparous (live) birth process. They are known for their unique appearance, including their large, bright red eyes, which can be used as a source of light during feeding or mating. Bdellodrilus is characterized by its elongated body shape, which is adapted for swimming and burrowing in the aquarium environment. These
