Trygonorrhina
Trygonorrhina is a genus of stingrays belonging to the family Trygonorrhinidae. These rays are found in the coastal waters of Australia, with some species also occurring in New Zealand. Commonly known as “fiddler rays”, they are distinguished by their unique features and have a significant role in the marine ecosystem.
Common Names
The most common names for Trygonorrhina species include:
- Fiddler ray
- Banded ray
- Saddle ray
- Whiptail ray
Characteristics
Trygonorrhina rays are characterized by the following features:
- Disc-shaped body: The rays have a flattened, disc-shaped body, which allows them to glide through the water with ease.
- Whip-like tail: They possess a long, whip-like tail, which is often longer than their body length.
- Venomous spine: At the base of the tail is a sharp, barbed spine that is connected to a venom gland.
- Eyes and spiracles: Like other rays, they have eyes located on the top of their head, and spiracles (breathing openings) on the dorsal side.
- Pectoral fins: Their pectoral fins are large and fused with their head, giving them a distinctive shape.
- Coloration: Trygonorrhina species often exhibit intricate patterns and colorations on their bodies, which serve as camouflage.
Environment
Fiddler rays inhabit coastal waters, including:
- Estuaries
- Seagrass meadows
- Sandy bottoms
- Rocky reefs
They are typically found in shallow waters, often near the seabed.