چگونه Stingray (Pari) را شناسایی کنیم

برای شناسایی Stingray (Pari) (Dasyatis)، به این ویژگی‌های کلیدی توجه کنید.

ویژگی‌های فیزیکی

شکل بدن

flat

رنگ‌آمیزی

Dorsal surface typically grey, brown, or olive, often mottled or spotted to blend with the substrate. Ventral surface is usually white or pale.

نوع فلس

none

موقعیت دهان

inferior

ویژگی‌های متمایز

Flattened, rhomboidal or oval disc-shaped body, Long, whip-like tail, often several times the length of the disc, One or more serrated, venomous spines located on the dorsal surface of the tail, Eyes and spiracles located dorsally, Mouth, nostrils, and gill slits located ventrally

باله پشتی

Absent or greatly reduced, sometimes represented by a small fold or keel on the tail.

باله دمی

Long, slender, whip-like, often with dorsal and/or ventral fin folds. Bears one or more venomous spines.

باله سینه‌ای

Greatly expanded and fused to the head and body, forming the characteristic disc.

باله‌های متمایز

Pelvic fins are small and located beneath the pectoral fins. No anal fin.

نکات شناسایی

1. 1

   Body Shape

   Look for the characteristic flattened, disc-shaped body, which can be rhomboidal or more rounded depending on the species.

2. 2

   Tail

   Observe the length and thickness of the tail. Dasyatis species typically have long, whip-like tails, often with one or more venomous spines.

3. 3

   Spine Presence

   Confirm the presence of a serrated, venomous spine(s) on the dorsal surface of the tail. The number and position can vary.

4. 4

   Coloration

   Note the dorsal coloration and patterning, which is often cryptic to match the substrate. Ventral side is usually pale.

5. 5

   Snout Shape

   The shape of the snout can be a distinguishing feature between species, ranging from broadly rounded to acutely pointed.

کاوش در Stingray (Pari)