👉 Myelophycus is a type of fish that primarily inhabit freshwater environments, often in bodies of water with low oxygen levels or where they are near bodies of water that provide them with food and shelter. The body of myelophycus is characterized by its long, slender body, which allows it to swim efficiently through the water. They have a distinctive pattern on their head called a "myelin patch," which helps them survive in environments with low oxygen levels.