Freshwater shark

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Carcharhinus leucas, a freshwater Bull shark, swims in Fiji 2007 Bullshark Beqa Fiji 2007.jpg
Carcharhinus leucas, a freshwater Bull shark, swims in Fiji 2007

Freshwater sharks are sharks able to live in freshwater lakes and rivers, including:

Some members of prehistoric groups of shark-like chondrichthyans ("sharks" in a broad sense), such as hybodonts and xenacanths, are also thought to have inhabited freshwater environments.

A small number of freshwater fish cyprinids and catfish (which are bony fish and thus quite unrelated to sharks) are also commonly called "freshwater sharks", "sharkminnows" or simply "sharks", particularly in the aquarium fish trade:

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<span class="mw-page-title-main">Bull shark</span> Species of fish

The bull shark, also known as the Zambezi shark in Africa and Lake Nicaragua shark in Nicaragua, is a species of requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. It is known for its aggressive nature, and presence mainly in warm, shallow brackish and freshwater systems including estuaries and (usually) lower reaches of rivers. This aggressive nature is a reason for its population being listed as vulnerable on the IUCN Red List. Shark-culling occurs near beaches to protect beach goers, which is one of the causes of bull shark populations continuing to decrease.

<span class="mw-page-title-main">Denison barb</span> Species of fish

The Denison barb, Denison's barb, Miss Kerala, red-line torpedo barb, or roseline shark is an endangered species of cyprinid fish endemic to the fast-flowing hill streams and rivers of the Western Ghats in India. It is commonly seen in the aquarium trade; pet collection caused it to become endangered and is its single major threat.

<span class="mw-page-title-main">Iridescent shark</span> Species of fish

The iridescent shark,iridescent shark catfish is a species of shark catfish native to the rivers of Southeast Asia. Despite its name, it is not a shark. It is found in the Mekong basin as well as the Chao Phraya River, and is heavily cultivated for food there.

<span class="mw-page-title-main">Pookode Lake</span>

Pookode Lake is a scenic freshwater lake in the Wayanad district in Kerala, South India. A major tourist destination in the district, Pookode is a natural freshwater lake nestling amid evergreen forests and mountain slopes at an elevation of 770 meters above sea level. It is 15 km away from Kalpetta. It is the smallest and highest elevation freshwater lake in Kerala.

<span class="mw-page-title-main">Red-tailed black shark</span> Species of fish

The red-tailed black shark, also known as the redtail shark and redtail sharkminnow, is a species of freshwater fish in the carp family, Cyprinidae. Despite its name, it is more closely related to carp. It is endemic to Thailand and currently critically endangered, but common in aquaria, where it is prized for its deep black body and vivid red or vivid orange tail. The red-tailed black sharks seen in the aquarium trade today are all captive bred.

<span class="mw-page-title-main">Sea Life at Mall of America</span> Aquarium in Minnesota, United States

Sea Life at Mall of America is a public aquarium located in the Mall of America in Bloomington, Minnesota, United States. The 1.3 million-US-gallon aquarium contains thousands of aquatic creatures, including sea turtles, sharks, sawfish, stingrays, jellyfish and seahorses. There are eleven exhibits featured at the aquarium.

<span class="mw-page-title-main">Fishkeeping</span> Practice of containing fish

Fishkeeping is a popular hobby, practiced by aquarists, concerned with keeping fish in a home aquarium or garden pond. There is also a piscicultural fishkeeping industry, serving as a branch of agriculture.

<span class="mw-page-title-main">Ariidae</span> Family of fishes

The Ariidae or ariid catfish are a family of catfish that mainly live in marine waters with many freshwater and brackish water species. They are found worldwide in tropical to warm temperate zones. The family includes about 143 species.

<span class="mw-page-title-main">Bala shark</span> Species of fish

The bala shark also known as the tricolor shark, tricolor sharkminnow, silver shark, or shark minnow, is a fish of the family Cyprinidae, and is one of the two species in the genus Balantiocheilos. This species is not a true shark, but is commonly so called because of its torpedo-shaped body and large fins. It is capable of killing big or small sized fishes such as

<span class="mw-page-title-main">Brackish-water aquarium</span>

A brackish-water aquarium is an aquarium where the water is brackish (semi-salty). The range of "saltiness" varies greatly, from near freshwater to near marine and is often referred to as specific gravity (SG) or salinity. Brackish water aquaria is a popular specialization within the fishkeeping hobby. Many species of fish traded as freshwater species are actually true brackish species, for example mollies, Florida flagfish, and some cichlids such as chromides and black-chin tilapia. There are also several popular species traded purely as brackish water fish, including monos spp, scats, archerfish, and various species of pufferfish, goby, flatfish, and gar. Generally, aquarists need to maintain a specific gravity of around 1.005 to 1.010 depending on the species being kept, but practically all brackish water fish tolerate variations in salinity well, and some aquarists maintain that regularly fluctuating the salinity in the aquarium actually keeps the fish healthy and free of parasites.

<span class="mw-page-title-main">Siamese algae-eater</span> Species of fish

The Siamese algae-eater is a species of freshwater fish in the carp family, Cyprinidae. This bottom-dwelling tropical fish is found in mainland Southeast Asia, including the Chao Phraya and Mekong basins as well as the Malay Peninsula. Its natural habitats are streams and rivers as well as flooded forests during the rainy season. The Siamese algae-eater should not be confused with the flying fox or the false siamensis , lacking the distinctive black bands of the former.

<span class="mw-page-title-main">Public aquarium</span> Aquatic counterpart of a zoo

A public aquarium or public water zoo is the aquatic counterpart of a zoo, which houses living aquatic animal and plant specimens for public viewing. Most public aquariums feature tanks larger than those kept by home aquarists, as well as smaller tanks. Since the first public aquariums were built in the mid-19th century, they have become popular and their numbers have increased. Most modern accredited aquariums stress conservation issues and educating the public.

<span class="mw-page-title-main">Rainbow shark</span> Species of fish

The rainbow shark is a species of Southeast Asian freshwater fish from the family Cyprinidae. It is also known as the ruby shark, red-fin shark, red-finned shark, rainbow sharkminnow, green fringelip labeo, whitefin shark and whitetail sharkminnow. It is a popular, semi-aggressive aquarium fish. Unlike true sharks, which belong to the Chondrichthyes lineage, the rainbow shark is an actinopterygiian.

<span class="mw-page-title-main">Aquarium</span> Transparent tank of water for fish and water-dwelling species

An aquarium is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquatic reptiles, such as turtles, and aquatic plants. The term aquarium, coined by English naturalist Philip Henry Gosse, combines the Latin root aqua, meaning 'water', with the suffix -arium, meaning 'a place for relating to'.

<i>Epalzeorhynchos</i> Genus of fishes

Epalzeorhynchos is a small ray-finned fish genus of the family Cyprinidae. Its members are – like some other cyprinids – known as "freshwater sharks" or simply "sharks". They are, however, freshwater members of the Osteichthyes lineage which is distinct from the Chondrichthyes lineage of sharks. The description of these animals as "shark" is most likely a reference to the shark-like shape of these popular cyprinids.

<span class="mw-page-title-main">Porcupine river stingray</span> Species of cartilaginous fish

The porcupine river stingray is a species of river stingray in the family Potamotrygonidae, the type of the Potamotrygon genus. It is found in the basins of the Paraná and Paraguay River basins in South America. Most chemical weathering of minerals seems to take place in the upland drainage basins rather than on the floodplains, and most major solutes display conservative mixing in the river-floodplain system. The population in the Rio Negro basin was described as a separated species, P. wallacei, in 2016.

<span class="mw-page-title-main">Black sharkminnow</span> Species of fish

The black sharkminnow, also known as the black shark or black labeo, is a species of freshwater fish in the carp family. It is found in the Mekong and Chao Phraya river basins, Malay Peninsula, Sumatra, Java and Borneo. It can reach a length of 90 cm (3 ft) and a weight of 7 kg (15 lb). It is sometimes seen in the aquarium trade, but is generally unsuitable for home aquaria due to its large adult size and territorial, aggressive behavior.

The harlequin sharkminnow is a freshwater cyprinid fish from central Africa. It is also known as the harlequin shark and variegated shark, especially in the aquarium hobby.