Giant Freshwater Stingray
Scientific Name: Urogymnus polylepis | Category: freshwater
More myth than fish until the line peels off, the Giant Freshwater Stingray is the ultimate freshwater phantom. Often described as a living bathmat, it possesses a smooth, almost rubbery, dark brown or greyish-brown dorsal disc that can span over two metres (6.6 feet) in width. Individuals exceeding 300 kg (660 lbs) are the stuff of legend from the Mekong. Its most immediately recognizable feature is the muscular, whip-like tail, often longer than the body itself, equipped with one or more fearsome, serrated venomous spines. At the boat, it appears less like a fish and more like a primordial, animate shadow gliding along the riverbed. You will not casually stumble upon this leviathan. Its empire is the great, sediment-laden river systems of Southeast Asia, most famously the Mekong in Thailand and Cambodia, particularly around the Koh Preah island area. It is a creature of the deep, dark current. Target the deepest, muddiest holes, often on the outside bends of the main river channels where the water is slow and the bottom soft. This is not a sight-fishing endeavor; it is a trial by depth sounder and heavy tackle, fishing directly on the bottom in regions where the river reveals its ancient, powerful soul. Anglers target the Giant Freshwater Stingray for the singular, almost otherworldly challenge it represents. The fight is less about acrobatics and more about raw, earth-moving power—a steady, unstoppable surge that feels like hooking the river bottom itself. It is the ultimate test of heavy tackle and angler endurance, with battles regularly exceeding an hour. As a pure trophy, it is peerless in freshwater; a photograph with one is a lifetime achievement. This is fishing as archaeology, pulling a prehistoric relic into the modern day for a brief, humbling moment before its release back into the murky depths from which it came.
species.getBySlug
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"id": "383be6c6-ff5c-4155-8648-67055c1b2605",
"commonName": "Giant Freshwater Stingray",
"scientificName": "Urogymnus polylepis",
"slug": "giant-freshwater-stingray",
"category": "freshwater",
"aliases": [
"freshwater stingray",
"giant stingray",
"Mekong Stingray",
"Whipray",
"Freshwater Disc Ray",
"Thai Giant Stingray",
"Mud Ray",
"The River Plate"
],
"description": "More myth than fish until the line peels off, the Giant Freshwater Stingray is the ultimate freshwater phantom. Often described as a living bathmat, it possesses a smooth, almost rubbery, dark brown or greyish-brown dorsal disc that can span over two metres (6.6 feet) in width. Individuals exceeding 300 kg (660 lbs) are the stuff of legend from the Mekong. Its most immediately recognizable feature is the muscular, whip-like tail, often longer than the body itself, equipped with one or more fearsome, serrated venomous spines. At the boat, it appears less like a fish and more like a primordial, animate shadow gliding along the riverbed.\n\nYou will not casually stumble upon this leviathan. Its empire is the great, sediment-laden river systems of Southeast Asia, most famously the Mekong in Thailand and Cambodia, particularly around the Koh Preah island area. It is a creature of the deep, dark current. Target the deepest, muddiest holes, often on the outside bends of the main river channels where the water is slow and the bottom soft. This is not a sight-fishing endeavor; it is a trial by depth sounder and heavy tackle, fishing directly on the bottom in regions where the river reveals its ancient, powerful soul.\n\nAnglers target the Giant Freshwater Stingray for the singular, almost otherworldly challenge it represents. The fight is less about acrobatics and more about raw, earth-moving power—a steady, unstoppable surge that feels like hooking the river bottom itself. It is the ultimate test of heavy tackle and angler endurance, with battles regularly exceeding an hour. As a pure trophy, it is peerless in freshwater; a photograph with one is a lifetime achievement. This is fishing as archaeology, pulling a prehistoric relic into the modern day for a brief, humbling moment before its release back into the murky depths from which it came.",
"imageUrl": "https://media.meridiaoutdoors.com/media/species/giant-freshwater-stingray/main.webp",
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"altText": "Giant Freshwater Stingray (Urogymnus polylepis) watercolor",
"caption": "More myth than fish until the line peels off, the Giant Freshwater Stingray is the ultimate freshwater phantom.",
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},
"phases": [
{
"id": "c3293d76-124b-43e6-ae6c-9a19c4de9a19",
"name": "Juvenile",
"slug": "juvenile",
"description": "The young stingray is a secretive and vulnerable creature, hidden in the soft sediments of the river. Its life is defined by growth and evasion, feeding on small invertebrates while remaining a nearly invisible part of the benthic world.",
"appearance": "A small, remarkably circular disc, typically under 60 cm (2 ft) in width. The dorsal surface is a smooth, uniform dark grey or chocolate brown, sometimes with faint, irregular lighter mottling or a subtle dark-edged ocellus (eye-spot) near the center. The body is proportionately thicker than an adult's, with a short, slender tail that already bears the distinctive serrated spine. The eyes are prominent on the dorsum.",
"triggers": null,
"habitat": "Shallow, sheltered, soft-bottomed areas along the main river channels, often in muddy backwaters or side channels with less current. Found in the same major river systems as adults but in more protected microhabitats.",
"anglersNote": "Rarely targeted intentionally, as they are difficult to locate. Accidental catches should be handled with extreme care due to the venomous spine and released immediately to ensure future populations of this vulnerable giant.",
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{
"id": "faf37769-fc86-490d-a18a-caa83685044c",
"name": "Adult",
"slug": "adult",
"description": "This is the legendary phantom of the deep, a fully mature river monarch. Its life is one of sedentary power, lying in wait in the profound darkness of the main river channel, exerting minimal effort to ambush prey and conserve energy for its immense size.",
"appearance": "A vast, near-perfectly circular or slightly wider-than-long disc, capable of exceeding 2 meters (6.6 ft) in width. The dorsal surface is smooth, rubbery, and uniformly dark brownish-grey, charcoal grey, or olive-brown, often appearing almost black when wet. The color is solid, though large individuals may show a subtle, patchy discoloration or scars. The tail is a muscular, whip-like appendage longer than the disc width, bearing one or more large, backward-facing, serrated venomous spines. The ventral side is a pale, creamy white with a greyish margin.",
"triggers": "Reaching a size and maturity that dictates a move to deeper, more powerful main-channel habitats.",
"habitat": "Exclusively the deepest, darkest holes in major sediment-laden river systems like the Mekong. Found on soft, muddy or sandy bottoms in the thalweg (deepest channel), often on outside bends where current scours depth.",
"anglersNote": "The ultimate trophy phase. Targeting it requires specialized heavy tackle, profound patience, and respect. The fight is a grueling test of endurance against raw, bottom-hugging power. Strictly catch-and-release for conservation of this vulnerable species.",
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],
"contentUpdatedAt": "2026-05-09T22:31:04.023Z"
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