Come identificare Common Stingray

Per identificare Common Stingray (Dasyatis pastinaca), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

flat

Colorazione

Dorsal surface typically grey, olive-brown, or reddish-brown, often uniform but can have faint spots or mottling. Ventral surface is white or off-white, sometimes with darker margins.

Tipo di squame

placoid

Posizione della bocca

inferior

Caratteristiche distintive

Broad, flattened, rhomboidal disc, wider than long., Long, whip-like tail, typically 1.5 to 2 times the disc length., One or more venomous serrated spines located on the dorsal surface of the tail, usually about one-third of the way down from the base., Small eyes followed by larger spiracles., Mouth, nostrils, and gill slits are located on the ventral surface.

Pinna dorsale

Absent, or represented by a small, rudimentary fold anterior to the spine.

Pinna caudale

Long, slender, whip-like, with a venomous spine. Lacks true caudal fin, but may have dorsal and ventral fin folds posterior to the spine.

Pinna pettorale

Large, forming the main 'wings' of the disc, continuous with the head.

Pinne distintive

Pelvic fins are small and located at the posterior margin of the disc.

Consigli per l'identificazione

1. 1

   Disc Shape

   Look for a broad, rhomboidal disc that is slightly wider than it is long, with rounded corners.

2. 2

   Tail

   Observe the long, whip-like tail, which is significantly longer than the disc and bears one or more prominent, serrated spines.

3. 3

   Coloration

   Note the generally uniform grey to brown dorsal coloration and white ventral surface.

4. 4

   Spiracles

   The presence of large spiracles immediately behind the eyes is characteristic.

Esplora Common Stingray