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Flathead (fish)
A flathead is one of a number of small to medium fish species with notably flat heads, distributed in membership across various genera of the family Platycephalidae. Many species are found in estuaries and the open ocean in the Indo-Pacific, especially most parts of Australia where they are popular sport and table fish. Flathead can grow at least in length and in weight, with dusky flathead (''Platycephalus fuscus'') being the largest, although fish this size are rarely caught. Anatomy and morphology Flathead are notable for their unusual body shape, which their hunting strategy is based upon. Flathead are dorsally compressed, meaning their body is wide but flattened and very low in height. Both eyes are on the top of the flattened head, giving excellent binocular vision to attack overhead prey. The effect is somewhat similar to flounders. In contrast to flounder, however, flathead are much more elongated, the tail remains vertical, and the mouth is large, wide and symmetric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ram Feeding
Aquatic feeding mechanisms face a special difficulty as compared to feeding on land, because the density of water is about the same as that of the prey, so the prey tends to be pushed away when the mouth is closed. This problem was first identified by Robert McNeill Alexander. As a result, underwater predators, especially bony fish, have evolved a number of specialized feeding mechanisms, such as filter feeding, ram feeding, suction feeding, protrusion, and pivot feeding. Most underwater predators combine more than one of these basic principles. For example, a typical generalized predator, such as the cod, combines suction with some amount of protrusion and pivot feeding. Suction feeding Suction feeding is a method of ingesting a prey item in fluids by sucking the prey into the predator's mouth. It is a highly coordinated behavior achieved by the dorsal rotation of the dermatocranium, lateral expansion of the suspensorium, and the depression of the lower jaw and hyoid. Suct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platycephalus
''Platycephalus'' is a genus of mostly marine, demersal ray-finned fish belonging to the family Platycephalidae. They are found in the eastern Mediterranean, the Indian Ocean and western Pacific Ocean. Taxonomy ''Platycephalus'' was first proposed as a genus in 1795 by the German physician and naturalist Marcus Elieser Bloch with ''Callionymus indicus'', which had been described in 1748 by Carl Linnaeus from "Asia", as its type species. This genus is classified within the family Playtcephalidae, the flatheads which the 5th edition of ''Fishes of the World'' classifies within the suborder Platycephaloidei in the order Scorpaeniformes. Etymology The genus name ''Platycephalus'' means "flat head" an allusion to the wide flattened head of these fishes which leads to the English common name flathead. Species There are currently 19 recognised species in this genus: * '' Platycephalus angustus'' Steindachner, 1866 (Steindachner's flathead) * '' Platycephalus aurimaculatus'' L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platycephalus Bassensis
''Platycephalus bassensis'' the Southern sand flathead, Bass flathead, bay flathead, common flathead, sand flathead, sandy, sandy flathead, slimy flathead or ''yanks'', is a species of marine ray-finned fish belonging to the family Platycephalidae, the flatheads. It is endemic to Australia. They are bottom dwellers and are popular for their use in fish and chips. They are the most commonly caught recreational species in Tasmania. Taxonomy ''Platycephalus bassensis'' was first formally described in 1829 by the French zoologist Georges Cuvier in volume 4 of the ''Histoire naturelle des poissons'' which he co-wrote with Achille Valenciennes. Cuvier gave the type locality as Western Port in Victoria. The specific name ''bassensis'' refers to the Bass Strait which the type locality is part of. Description ''Platycephalus bassensis'' has and elongated and slightly flattened body with a large, flattened head which is just under one-third of the standard length and which has two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria, Australia
Victoria, commonly abbreviated as Vic, is a state in southeastern Australia. It is the second-smallest state (after Tasmania), with a land area of ; the second-most-populated state (after New South Wales), with a population of over 7 million; and the most densely populated state in Australia (30.6 per km2). Victoria's economy is the second-largest among Australian states and is highly diversified, with service sectors predominating. Victoria is bordered by New South Wales to the north and South Australia to the west and is bounded by the Bass Strait to the south (with the exception of a small land border with Tasmania located along Boundary Islet), the Southern Ocean to the southwest, and the Tasman Sea (a marginal sea of the South Pacific Ocean) to the southeast. The state encompasses a range of climates and geographical features from its temperate coastal and central regions to the Victorian Alps in the northeast and the semi-arid northwest. The majority of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gippsland Lakes
The Gippsland Lakes are a network of coastal lakes, marshes and lagoons in East Gippsland, Victoria, Australia covering an overall area of about between the rural towns of Lakes Entrance, Bairnsdale and Sale. The largest of the lakes are Lake Wellington ( Gunai language: ''Murla''), Lake King (Gunai: ''Ngarrang'') and Lake Victoria (Gunai: ''Toonallook''). The lakes are collectively fed by the Avon, Thomson, Latrobe, Mitchell, Nicholson and Tambo Rivers, and drain into Bass Strait through a short canal about southwest of Lakes Entrance town centre. History The Gippsland Lakes were formed by two principal processes. The first is river delta alluvial deposition of sediment brought in by the rivers which flow into the lakes. Silt deposited by this process forms into long jetties which can run many kilometres into a lake, as exemplified by the Mitchell River silt jetties that run into Lake King. The second process is the action of sea current in Bass Strait which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queensland
Queensland ( , commonly abbreviated as Qld) is a States and territories of Australia, state in northeastern Australia, and is the second-largest and third-most populous state in Australia. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south, respectively. To the east, Queensland is bordered by the Coral Sea and the Pacific Ocean; to the state's north is the Torres Strait, separating the Australian mainland from Papua New Guinea, and the Gulf of Carpentaria to the north-west. With an area of , Queensland is the world's List of country subdivisions by area, sixth-largest subnational entity; it List of countries and dependencies by area, is larger than all but 16 countries. Due to its size, Queensland's geographical features and climates are diverse, and include tropical rainforests, rivers, coral reefs, mountain ranges and white sandy beaches in its Tropical climate, tropical and Humid subtropical climate, sub-tropical c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cairns
Cairns (; ) is a city in the Cairns Region, Queensland, Australia, on the tropical north east coast of Far North Queensland. In the , Cairns had a population of 153,181 people. The city was founded in 1876 and named after William Cairns, Sir William Wellington Cairns, following the discovery of gold in the Hodgkinson Minerals Area, Hodgkinson River. During World War II, the city became a staging ground for the Allies of World War II, Allied Forces in the Battle of the Coral Sea. By the late 20th century the city had become a centre of international tourism. In the early 21st century, it has developed into a major regional city. The economy of Cairns is based primarily on tourism, healthcare and education, along with a major capacity in aviation, marine and defence industries. The city has a Gross regional domestic product, gross regional product at about $12.2 billion as of 2024. The city is served by Cairns Airport, Cairns International Airport, the List of the busiest airpo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dusky Flathead
''Platycephalus fuscus'', the dusky flathead or black flathead, (literally translating from Ancient Greek as "''flat-head dusky''") is a large predatory fish and the largest member of the family (biology), family Platycephalidae. Dusky flathead are a largely Estuary, estuarine species and are found in estuaries, estuarine lakes and coastal bays on the east coast of Australia, from Cairns in Queensland to the Gippsland Lakes in Victoria, Australia, Victoria. They occur over sand, mud, gravel and seagrass and can inhabit estuarine waters up to the tidal limit. Morphology Flathead are notable for their unusual body shape, upon which their hunting strategy is based. Flathead are dorsally compressed, meaning their body is wide but flattened and very low in height. Both eyes are on the top of the flattened head, giving excellent binocular vision in order to attack overhead prey. The effect is somewhat similar to flounder. In contrast to flounder however, flathead are much more elong ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CSIRO Publishing
CSIRO Publishing is an Australian-based science and technology publisher. It publishes books, journals and magazines across a range of scientific disciplines, including agriculture, chemistry, plant and animal sciences, natural history and environmental management. It also produces interactive learning modules for primary school students and provides writing workshops for researchers. CSIRO Publishing operates within the Commonwealth Scientific and Industrial Research Organisation (CSIRO). It was established as a stand-alone business unit in 1995. Books CSIRO Publishing publishes books in a number of categories, including: * Animals: behaviour; birds; domesticated; ecology and management; field guides; fish; genetics and evolution; health and welfare; invasive; invertebrates; mammals and marsupials; reproduction and physiology; reptiles and amphibians; and wildlife. * Built Environment: architecture; building; codes and standards; engineering; landscape architecture; and plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suction Feeding
Aquatic feeding mechanisms face a special difficulty as compared to feeding on land, because the density of water is about the same as that of the prey, so the prey tends to be pushed away when the mouth is closed. This problem was first identified by Robert McNeill Alexander. As a result, underwater predators, especially bony fish, have evolved a number of specialized feeding mechanisms, such as filter feeding, ram feeding, suction feeding, protrusion, and pivot feeding. Most underwater predators combine more than one of these basic principles. For example, a typical generalized predator, such as the cod, combines suction with some amount of protrusion and pivot feeding. Suction feeding Suction feeding is a method of ingesting a prey item in fluids by sucking the prey into the predator's mouth. It is a highly coordinated behavior achieved by the dorsal rotation of the dermatocranium, lateral expansion of the suspensorium, and the depression of the lower jaw and hyoid. Sucti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
