Callechelys
Callechelys is a genus of snake eels in the family Ophichthidae. They are commonly referred to as “snake eels” or “worm eels.” This genus is characterized by their elongated, snake-like bodies that lack pectoral fins, a feature common to all members of the Ophichthidae family. They are typically found in tropical and subtropical waters worldwide.
Common Names
While often simply referred to as "snake eels," members of the Callechelys genus may also be known by other common names depending on the specific species and location. Some examples include:
- Worm eels
- Sand eels (but not to be confused with true sand eels in the family Ammodytidae)
- Conger eels (again, not to be confused with true conger eels in the family Congridae)
Characteristics
Callechelys species share a number of defining characteristics, including:
- Elongated body: They are extremely slender and snake-like, lacking pectoral fins.
- Small head: Their head is typically small in proportion to their body.
- Terminal mouth: The mouth is located at the tip of the snout.
- Teeth: They possess sharp, pointed teeth designed for capturing prey.
- Lateral line: They have a well-developed lateral line system that helps them detect vibrations in the water.
- Coloration: Coloration can vary depending on species, but generally they are brown, grey, or yellow with darker markings.
Environment and Behavior
Callechelys eels are typically found in a variety of marine habitats, including:
- Sandy bottoms: They often burrow into the sand or mud, using their tail as an anchor.
- Coral reefs: Some species may inhabit coral reefs, using their slender bodies to navigate between coral branches.
- Seagrass beds: They may also be found in seagrass beds, where they can hunt for prey.
These eels are generally nocturnal, spending the day buried in the substrate and emerging at night to hunt. They are carnivorous, feeding on a variety of invertebrates and small fishes.