Definition: Arachnospongus is a type of fish that belongs to the family Spongidae and is commonly found in freshwater habitats. These fish are primarily aquatic, with their bodies generally being flat or slightly flattened, allowing them to move through water efficiently. They have a streamlined body shape and typically have two pairs of wings for flight. Arachnospongus can be found in many different environments, including lakes, rivers, and coastal waters.