Narkidae
Narkidae is a family of electric rays, commonly known as numbfishes or torpedoes. They are characterized by their flattened bodies, large pectoral fins that are fused to the head, and powerful electric organs located on either side of the head. These organs generate a strong electrical discharge that is used to stun prey and deter predators. Numbfishes are found in tropical and subtropical waters worldwide, typically inhabiting sandy or muddy bottoms.
Common Names
Members of the Narkidae family are commonly referred to as numbfishes or torpedoes. These names are derived from their characteristic ability to deliver a powerful electric shock.
Characteristics
Narkidae species exhibit several distinguishing characteristics:
- Flattened body: They have a flattened, disk-shaped body, similar to other rays.
- Large pectoral fins: Their pectoral fins are large and fused to the head, giving them a distinctive, wing-like appearance.
- Electric organs: The most notable feature is their pair of large electric organs located on either side of the head. These organs generate a strong electrical discharge that can stun prey and deter predators.
- Ventral mouth: Their mouth is located on the underside of their body, positioned between their pectoral fins.
- Gill slits: They have five pairs of gill slits, positioned on the underside of the body.
- Small dorsal fins: Two small dorsal fins are located towards the tail, with a caudal fin at the end.
Environment
Numbfishes are primarily found in tropical and subtropical waters around the globe. They are typically found in coastal regions, inhabiting sandy or muddy bottoms, often near coral reefs. They can also be found in estuaries and even freshwater environments.