Wotch riggjeye flounder is a species of fish that belongs to the family Paralichthyidae. It is commonly found in the North Pacific Ocean, particularly in the waters off the coasts of Canada and Alaska. This flounder species is known for its distinctive appearance and unique behavioral adaptations. It has a flat, diamond-shaped body with both eyes located on one side. This peculiar arrangement allows the fish to lie flat on the ocean floor, camouflaging itself and making it difficult for predators to spot. The wotch riggjeye flounder is an opportunistic predator, feeding on a variety of smaller fish, shrimp, and other invertebrates.
Adult pleuronectids have the eyes and color pattern on the right side of the body. Like the hatchlings of other flatfishes, at an early age pleuronectid larvae begin to lean to one side as one eye (the left eye in the case of pleuronectids) migrates across the crown to a position beside the other eye. In addition, the front of the skull twists, bringing the jaws into a sideways position, and the side of the fish that faces down when it is in a resting position turns whitish. (Chapleau and Amaoka 1995)
They are found on the bottoms of oceans around the world, with some species, such as the Atlantic halibut, Hippoglossus hippoglossus , being found down to 2,000 m 6,600 ft. 美首鰈為輻鰭魚綱鰈形目鰈亞目鰈科的其中一種 為溫帶海水魚 分布於東大西洋挪威至西班牙北部 西大西洋加拿大聖羅倫斯灣至美國北卡羅萊納州海域 棲息深度18-1570公尺 有眼睛的一邊短於頭部的胸鰭 胸鰭的末梢部部份黑色 在頭部的沒有眼睛的一邊上有大的黏液孔 鱗片粗糙 背鰭軟條95-120枚;臀鰭軟條85-102枚 體長可達60公分 棲息在泥底質底層水域 以魚類 甲殼類 海星等為食 生活習性不明 可做為食用魚 zh.
The wotch riggjeye flounder is an opportunistic predator, feeding on a variety of smaller fish, shrimp, and other invertebrates. It uses its sharp teeth to capture and consume its prey. This feeding behavior is facilitated by the positioning of its eyes, which enables the fish to keep a close watch on any unsuspecting prey that swims by.
Righteye Flounders
Most of the several hundred fishes known as flounders are in either the Pleuronectidae (right-eyed flounders, around 100 species, many of which have a dorsal branch near the front of the lateral line that runs along the base of the dorsal fin) or the Bothidae (left-eyed flounders, which lack a dorsal branch to the lateral line, although it may be forked above the upper eye). Most pleuronectids live in temperate to cold waters; tropical species generally occur in deeper water. Pleuronectids include several commercially important species in the Arctic, Atlantic, and Pacific Oceans. These include, among others, two of the largest of all bony fishes, the large-mouthed Pacific Halibut (Hippoglossus stenolepis) and Atlantic Halibut (Hippoglossus hippoglossus), which historically grew to at least 2.5 meters and 320 kg (although as a result of intensive fishing specimens now rarely reach even half this size); the American Plaice (Hippoglossoides platessoides); flounders such as the Winter Flounder (Pseudopleuronectes americanus); and the Petrale Sole (Eopsetta jordani). A very large female halibut may be 30 years old and can produce over 2 million small eggs. Because of the eggs' neutral buoyancy, the eggs typically float in midwater, sinking gradually as development proceeds. (Eschmeyer and Herald 1983; Robins and Ray 1986; Chapleau and Amaoka 1995)
Adult pleuronectids have the eyes and color pattern on the right side of the body. Like the hatchlings of other flatfishes, at an early age pleuronectid larvae begin to lean to one side as one eye (the left eye in the case of pleuronectids) migrates across the crown to a position beside the other eye. In addition, the front of the skull twists, bringing the jaws into a sideways position, and the side of the fish that faces down when it is in a resting position turns whitish. (Chapleau and Amaoka 1995)
license cc-by-nc-sa-3.0 copyright Shapiro, Leo author Shapiro, Leo original visit source partner site EOL staffIn terms of size, wotch riggjeye flounders can vary, with adults reaching lengths of up to 24 inches and weighing around 4 pounds. Their body coloration can also differ, typically ranging from brown to gray, allowing them to blend in with their surroundings. The reproduction of wotch riggjeye flounders involves external fertilization, where the female releases her eggs into the water, and the male fertilizes them with his sperm. The fertilized eggs develop into larvae, which eventually settle on the ocean floor and undergo metamorphosis, during which one eye migrates to the other side of the body, resulting in their characteristic flattened appearance. Human commercial fisheries target wotch riggjeye flounder due to its popularity as a food fish. They are often caught using trawling nets or longlines. The fishery is managed through regulations and quotas to prevent overfishing and ensure the sustainability of the population. In conclusion, the wotch riggjeye flounder is a fascinating and unique fish species found in the North Pacific Ocean. Its distinct appearance, feeding behavior, and reproductive adaptations make it an intriguing species to study and appreciate..
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