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Lake Laut Tawar Lake Laut Tawar Takengon, Central Aceh Tengah Regency. Rasbora tawarensis, locally known as depik, is a critically endangered species of cyprinid fish. It is endemic to Lake Laut Tawar in Indonesia, where its population is rapidly decreasing due to ecological disturbances, global warming, introduced species, unlawful fishing practices, and pollution.
Lake Laut Tawar (Indonesian: Danau Laut Tawar) is a lake in Central Aceh Regency of Aceh Province, Indonesia. [1] It is located at 4°36′43″N 96°55′25″E / 4.61194°N 96.92361°E / 4.61194; 96.
Benthic flatfish and benthopelagic cod on a shore – Jan van Kessel senior, 1626–1679. Demersal fish can be divided into two main types: strictly benthic fish which can rest on the sea floor, and benthopelagic fish which can float in the water column just above the sea floor.
The Mexican blind brotula and other cave-dwelling brotulas are among the few species that live in anchialine habitats. Although many cavefish species are restricted to underground lakes, pools or rivers in actual caves, some are found in aquifers and may only be detected by humans when artificial wells are dug into this layer.
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A school of large pelagic predator fish (bluefin trevally) sizing up a school of small pelagic prey fish (). Pelagic fish live in the pelagic zone of ocean or lake waters—being neither close to the bottom nor near the shore—in contrast with demersal fish that live on or near the bottom, and reef fish that are associated with coral reefs.
In Malaysia, the reason for its other common local name, translated to "The Sultan Fish" is attributed to the claim that the fish was a favorite among royal members and that palace workers would go to markets and call for any fishermen that had the Sultan's fish.
At least five extinct genera, known only from fossils, are classified as osteoglossids; these date back at least as far as the Late Cretaceous.Other fossils from as far back as the Late Jurassic or Early Cretaceous are widely considered to belong to the arowana superorder Osteoglossomorpha.