👉 The term "Aphthonomorpha" is a genus in the order of Phylum Annelida, which includes the fish and other aquatic animals. This group of animals are characterized by their slender body structure, wide gills, and the ability to move through water with ease. The name "Aphthonomorpha" comes from the Greek word "aphthono," meaning small or narrow, as in the smaller members of this group.
