General Shape:
* Long, snake-like body: Eels are known for their elongated bodies, resembling snakes or worms.
* Slender and flexible: They are very flexible and can easily move through tight spaces.
* No pelvic fins: Unlike most fish, eels lack pelvic fins.
* Small, pectoral fins: They have small, often inconspicuous pectoral fins.
* Dorsal and anal fins: These fins extend almost the entire length of the body, merging with the caudal fin.
Appearance:
* Color: Varies depending on the species, but can range from brown, black, green, yellow, or even white. Some eels have intricate patterns.
* Scales: Many species have tiny, embedded scales that are difficult to see.
* Eyes: Relatively small, but can be prominent depending on the species.
* Mouth: Eels have a large, wide mouth with sharp teeth.
* Nostrils: Two small, tube-like nostrils located near the snout.
Specific Examples:
* Moray Eel: Large, often brightly colored with distinctive patterns.
* Electric Eel: Long and slender, with a noticeable electric organ located along their tail.
* Conger Eel: Large, robust with a pointed head.
* European Eel: Long, slender, with a darker dorsal side and a lighter ventral side.
Important Note: Eels are not snakes. While they share a similar body shape, they are fish and breathe underwater using gills.