Carapidae
Carapidae is a family of oviparous fish belonging to the order Ophidiiformes, commonly known as pearlfish or cusk-eels. These fish are characterized by their elongated, eel-like bodies, small eyes, and often translucent skin. Their fins are typically confluent, with the dorsal, caudal, and anal fins joined together. Carapids are found in tropical and subtropical waters worldwide, inhabiting marine environments from shallow coastal areas to the deep sea.
A notable characteristic of many carapid species is their symbiotic relationship with various invertebrates, particularly holothurians