👉 Myctophid is a type of crustacean which are known for their ability to produce a strong, sticky substance called "myctophus" that they use as a defense against predators. This substance is typically found on the underside of the body and can be quite large, making it difficult for predators to detect or attack. Myctophid also have a special type of mouth called a pterygoid process which enables them to pierce their bodies with their claws.