👉 Mormyridae is a group of marine invertebrates that are commonly found in freshwater and brackish waters. They are classified under the family Mollusca, which includes mollusks (molluscs) such as clams, oysters, snails, and mussels. These animals have a wide range of adaptations for survival in their respective environments, including the ability to filter out dissolved oxygen from water and use their specialized digestive organs to extract nutrients from their food