Stringry
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Stingrays are a group of cartilaginous fish related to sharks that are classified into eight families. They have flattened bodies that allow them to hide in sand and use smell and electroreception to find prey like small fish. Stingrays are ovoviviparous, bearing live young in litters, and feed on the seafloor in areas like coral reefs. While their stings can injure humans if stepped on accidentally, rays are generally not aggressive and are caught and eaten in some areas. Scientists in Thailand discovered an enormous freshwater stingray that may be the largest freshwater fish ever documented.
Stringry
- 1. Made and Presented By: Muhammad Zaheeb Abdullah Ahmed
- 2. •Stingrays are a group of rays, which are cartilaginous fish related to sharks. • They are classified in the suborder of the order and consist of eight families.
- 3. 1. Sixgill Stingray 2. Deep Water Stingray 3. Stingrees 4. Round Rays 5. Whiptail Stingrays 6. River Stingrays 7. Butterfly Rays 8. Eagle Rays.
- 4. • The flattened bodies of stingrays allow them to effectively conceal themselves in their environment. • Stingrays do this by agitating the sand and hiding beneath it. Because their eyes are on top of their bodies and their mouths on the undersides, stingrays cannot see their prey; instead, they use smell and electroreceptors similar to those of sharks. • Stingrays feed primarily on small fish. Some stingrays' mouths contain two powerful, shell-crushing plates, while other species only have sucking mouthparts. Stingrays settle on the bottom while feeding, often leaving only their eyes and tail visible. • Coral reefs are favorite feeding grounds and are usually shared with sharks during high tide.
- 5. • When a male is courting a female, he will follow her closely, biting at her pectoral disc. He then places one of his two claspers into her valve. • Stingrays are ovoviviparous, bearing live young in "litters" of 5 to 13. The female holds the embryos in the womb without a placenta. Instead, the embryos absorb nutrients from a yolk sac, and after the sac is depleted, the mother provides uterine "milk". • At the Sea Life London Aquarium, two female stingrays have delivered seven baby stingrays, although the mothers have not been near a male for two years. "Rays have been known to store sperm and not give birth until they decide the timing is right"
- 6. • A stingray's diet includes small fish, snails, clams, and shrimp, and some other small sea creatures. • Stingrays do not aggressively attack humans, though stings do normally occur if a ray is accidentally stepped on. To avoid stepping on a stingray in shallow water, the water should be waded through with a shuffle. • Rays are edible, and may be caught as food using fishing lines or spears. Stingray recipes abound throughout the world, with dried forms of the wings being most common. For example, in Malaysia and Singapore, stingray is commonly grilled over charcoal, then served with spicy sambal sauce, or soysauce
- 7. • Scientists working in Thailand's Mae Klong River made a big find an enormous stingray that they think is a contender for the largest freshwater fish ever documented by researchers. The ray was caught and released in about 65 feet (20 meters) of water in the Amphawa District, about an hour outside in Bangkok on March 11, 2015.