Narcine
Narcine is a genus of electric rays, commonly known as numbfishes, in the family Narcinidae. These rays are found in shallow, coastal waters around the world. They are characterized by their flattened bodies, large pectoral fins that are fused to their heads, and the ability to generate strong electric shocks for defense and prey capture. While their distribution spans across various regions, they are particularly abundant in tropical and subtropical waters.
Common Names
Members of the genus Narcine are commonly referred to as numbfishes, a name they share with other electric rays. Some species have specific common names, such as the "Australian numbfish" (Narcine tasmaniensis) and the "marbled electric ray" (Narcine brasiliensis).
Characteristics
Narcine species exhibit several distinguishing features:
- Flattened bodies: Like other rays, they have a flattened, disc-shaped body.
- Large pectoral fins: Their pectoral fins are fused to their heads, giving them a distinctive rounded shape.
- Electric organs: These rays possess specialized electric organs located on either side of their heads. These organs generate strong electric shocks used for defense and to stun prey.
- Small mouths: Their mouths are small and located on the ventral side of their bodies.
- Gill slits: They have five pairs of gill slits located on the underside of their bodies.
- Small eyes: Their eyes are relatively small and located on the dorsal side of their heads.
Environments
Narcine species are primarily found in shallow, coastal waters, typically over sandy or muddy bottoms. They prefer areas with moderate currents and temperatures, often inhabiting depths ranging from a few meters to several hundred meters. They can be found in a variety of habitats, including estuaries, bays, and coral reefs.
References
For further information, please refer to the following reliable sources: