Description
The yellow stingray is small, growing no more than 36 cm (14 in) across and 70 cm (28 in) long. It has a nearly circular pectoral fin disc slightly longer than wide, with a short, obtuse snout. The eyes are immediately followed by the spiracles. There is a narrow curtain of skin between the nostrils, with a fringed posterior margin. The mouth is nearly straight and contains a transverse row of 3–5 papillae on the floor. There are 30–34 tooth rows in the upper jaw and a similar number in the lower jaw, arranged into bands. The teeth are broad-based, with low, blunt crowns in females and juveniles, and tall, pointed cusps in adult males. The teeth of males are more widely spaced than those of females. The pelvic fins have nearly straight leading margins and rounded trailing margins.
The tail is stout and flattened, comprising less than half the total length, and terminates in a small, leaf-shaped caudal fin about a quarter high as long, that is continuous around the last vertebra. A serrated spine is positioned about halfway along the tail. Newborn rays are smooth-skinned; shortly after birth small, blunt tubercles appear in the middle of the back, which in larger adults extends to between the eyes, the "shoulders", and the base of the tail. Adults also develop recurved thorns along the upper margin of the caudal fin. The color and pattern of the yellow stingray varies significantly among individuals, though most follow one of two schemes: minute dark green or brown reticulations on a light background, or dense white, yellow, or golden spots on a dark green or brown background. The underside is yellowish, greenish, or brownish white, with small darker spots toward the disc margin and the tail. This species is capable of rapidly changing the tone and contrast of its coloration to better match its environment.
Read more about this topic: Yellow Stingray
Famous quotes containing the word description:
“A sound mind in a sound body, is a short, but full description of a happy state in this World: he that has these two, has little more to wish for; and he that wants either of them, will be little the better for anything else.”
—John Locke (1632–1704)
“The Sage of Toronto ... spent several decades marveling at the numerous freedoms created by a “global village” instantly and effortlessly accessible to all. Villages, unlike towns, have always been ruled by conformism, isolation, petty surveillance, boredom and repetitive malicious gossip about the same families. Which is a precise enough description of the global spectacle’s present vulgarity.”
—Guy Debord (b. 1931)
“He hath achieved a maid
That paragons description and wild fame;
One that excels the quirks of blazoning pens.”
—William Shakespeare (1564–1616)