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Flowerhorn cichlids are ornamental aquarium fish noted for their vivid colors and the distinctively shaped heads for which they are named. Their head protuberance is formally called a nuchal hump. Like blood parrot cichlids, they are hybrids that exist in the wild only because of their release. Flowerhorns first emerged for sale on the aquarium market in Malaysia in the late 1990s and soon became popular in many countries in Asia. They are commonly kept by hobbyists in the US, Asia, and Europe. Numerous cast-off flowerhorns have been released to the wild, especially in Singapore and Malaysia, where they have become an invasive pest animal. Their importation is banned in Australia.
Flowerhorn breeding dates to 1993. [1] [ self-published source? ][ unreliable source ] Taiwanese and Malaysian peoples admired fish with protruding heads, known as 'kaloi' or 'warships', found in the western part of the nation. The slightly protruding forehead and long tail of cichlids were prized in Taiwanese society as bringing luck in geomancy. By 1994, red devil cichlids (typically Amphilophus labiatus ) and trimac cichlids ( A. trimaculatus ) had been imported from Central America to Malaysia and the hybrid blood parrot cichlid had been imported from Taiwan to Malaysia. These fish were then bred together, marking the birth of the flowerhorn.[ dubious – discuss ][ citation needed ]
When luohans were first imported to the US, there were only two varieties of these fish for distribution: the flowerhorn and the golden base. [1] Flowerhorns came in two varieties; those with pearls (silver-white spots on the skin), and those without.
There are several ways by which breeders distinguish between male and female flower horns. Generally, the males are larger than the females, but there are some exceptions. Males have the kok, or the nuchal hump, on their foreheads. Males also usually have brighter and more vivid colors. For most breeds, the females have black dots on their dorsal fins, whereas males usually have longer anal and dorsal fins. [2] [ self-published source? ]
Flowerhorn cichlids are subject to several diseases, including hole-in-head disease, "ich", and digestive blockages.
The original flowerhorn hybrid stock are referred to as luohans (from the Chinese word for the Buddhist concept of arhat ). The four main derived varieties are zhen zhu, golden monkey, kamfa, and the golden base group, [1] which includes faders and the golden trimac. They are sometimes referred to as breeds, though that term technically only refers to varieties of fully domesticated species.
It can be a particularly expensive flowerhorn, carrying a price tag of more than one thousand dollars. The most expensive Golden Monkey was sold for $600,000 during a Malaysian exhibition in 2009.
This variety originated slightly after the Kamfa, derived from the luohan. It has a rounded tail, large mouth, red protruding eyes, and a prominent head flower. [1]
From the Kamfa family, these Flowerhorns are known for their massive nuchal humps, also called a kok, and their strikingly varied patterning. [1]
This is a cross of a Kamfa male and a Malau female. The body and face resemble a typical Kamfa (see above). [1]
New flowerhorn strains have been developed through breeding programs in the United States. Although it is hard for the US to compete with Asia's well established flowerhorn breeding farms, strains with unique genetics have been created.
Flowerhorns have been criticized by cichlid hobbyists and environmentalists for a number of reasons. Flowerhorn breeding resulted in culling of surplus and deformed fish, some of which were dumped in the wild in Malaysia and Singapore, where they survived and disrupted riverine and pond ecosystems. [3] [4] Like most other cichlids, flowerhorns are aggressive and can breed quickly, competing with and eating native fish. [5]
Flowerhorn breeding [2] contributes to the commercial demand for new and different fish, leading to unethical practices such as breeding for anatomical deformities, as occurred in goldfish breeding.
Within the aquarium hobby, flowerhorns are not favored because of the difficulty of breeding them. The majority of flowerhorn males are sterile (cannot reproduce), so finding one that can is time consuming. Hobbyists have to wait until 8–10 months for a male fish to reach sexual maturity then pair it with a female to test fertility. [2]
Other issues regarding flowerhorns is that of some hybrids being sold with tattoos, which some people consider unethical, as well as the use of hormones which have been used to enhance the colors of African haplochromines. [6]
Finally, another issue with regard to flowerhorns is the dilution of genetic lineages, since flowerhorns are hybrids and not true species. [6]
The southern platyfish, common platy, or moonfish is a species of freshwater fish in family Poeciliidae of order Cyprinodontiformes. A live-bearer, it is closely related to the green swordtail and can interbreed with it. It is native to an area of North and Central America stretching from Veracruz, Mexico, to northern Belize.
Cichlids are fish from the family Cichlidae in the order Cichliformes. Traditionally Cichlids were classed in a suborder, the Labroidei, along with the wrasses (Labridae), in the order Perciformes, but molecular studies have contradicted this grouping. On the basis of fossil evidence, it first appeared in Argentina during the Early Eocene epoch, about 48.6 million years ago; however, molecular clock estimates have placed the family's origin as far back as 67 million years ago, during the late Cretaceous period. The closest living relative of cichlids is probably the convict blenny, and both families are classified in the 5th edition of Fishes of the World as the two families in the Cichliformes, part of the subseries Ovalentaria. This family is large, diverse, and widely dispersed. At least 1,650 species have been scientifically described, making it one of the largest vertebrate families. New species are discovered annually, and many species remain undescribed. The actual number of species is therefore unknown, with estimates varying between 2,000 and 3,000.
Symphysodon is a genus of cichlids native to the Amazon river basin in Brazil. Due to their distinctive shape, calm behavior, many bright colors and patterns, and dedicated parenting techniques, discus are popular as freshwater aquarium fish, and their aquaculture in several countries in Asia is a major industry. They are sometimes referred to as pompadour fish. The discus fish has attracted a cult following of collectors and has created a multimillion dollar international industry complete with shows, competitions, and reputable online breeders.
The neon tetra is a freshwater fish of the characin family of order Characiformes. The type species of its genus, it is native to blackwater and clearwater streams in the Amazon basin of South America. Its bright colouring makes the fish visible to conspecifics in the dark blackwater streams, and is also the main reason for its popularity among freshwater fish hobbyists, with neon tetras being one of the most widely kept tropical fish in the world.
Barbodes semifasciolatus, the Chinese barb, is a species of cyprinid fish native to the Red River basin in southeast Asia where they occur in fresh waters at depths of 5 metres (16 ft) or less. The captive variant popularly known as the gold barb or Schuberti barb is an extremely popular aquarium fish.
The green terror is a colorful freshwater fish in the cichlid family. The fish originates from the Pacific side of South America from the Tumbes River in Peru to the Esmeraldas River in Ecuador. It is polymorphic and can have white or gold-orange edging to the tail and dorsal fins. It has historically been confused with two other species that always have narrow, clearly defined white edging, the more southerly distributed A. stalsbergi and the more northerly A. blombergi.
Tropical fish are fish found in aquatic tropical environments around the world. Fishkeepers often keep tropical fish in freshwater and saltwater aquariums. The term "tropical fish" is not a taxonomic group, but rather is a general term for fish found in such environments, particularly those kept in aquariums.
The convict cichlid is a fish species from the family Cichlidae, native to Central America, also known as the zebra cichlid. Convict cichlids are popular aquarium fish and have also been the subject of numerous studies on fish behaviour.
Fishkeeping is a popular hobby, practiced by aquarists, concerned with keeping fish in a home aquarium or garden pond. It is a practice that encompasses the art of maintaining one's own aquatic ecosystem, featuring a lot of variety with various water systems, all of which have their own unique features and requirements. Fishkeeping primarily serves as a token of appreciation and fascination for marine life and the environment that surrounds such, along with other purposes such as the piscicultural fishkeeping industry, serving as a branch of agriculture, being one of the most widespread methods of cultivating fish for commercial profit.
The ram cichlid is a species of freshwater fish endemic to the Orinoco River basin, in the savannahs of Venezuela and Colombia in South America. The species has been examined in studies on fish behaviour and is a popular aquarium fish, traded under a variety of common names, including ram, blue ram, German blue ram, Asian ram, butterfly cichlid, Ramirez's dwarf cichlid, dwarf butterfly cichlid and Ramirezi. The species is a member of the family Cichlidae and subfamily Geophaginae.
Lamprologus ocellatus is a species of shell dwelling cichlid endemic to Lake Tanganyika. It is a popular aquarium fish due to its small size, appearance, and intelligence.
The Blood Parrot Cichlid , or parrotcichlid, is a hybrid species of fish in the family Cichlidae. The fish was first bred in Taiwan around 1986. Blood parrots should not be confused with other parrot cichlids or salt water parrotfish. Natural colors of the fish are red, yellow, and grey: other colors are injected by breeders.
Pelvicachromis pulcher is a freshwater fish of the cichlid family, endemic to Nigeria and Cameroon. It is popular amongst aquarium hobbyists, and is most commonly sold under the name kribensis, although it has other common names, including various derivatives and color morphs of the kribensis: krib, common krib, red krib, super-red krib and rainbow krib, along with rainbow cichlid and purple cichlid.
Amphilophus citrinellus is a large cichlid fish endemic to the San Juan River and adjacent watersheds in Costa Rica and Nicaragua. In the aquarium trade A. citrinellus is often sold under the trade name of Midas cichlid. A. citrinellus are omnivorous and their diet consists of plant material, molluscs and smaller fish. The species is closely related to, but not to be mistaken for, Amphilophus labiatus, which shares the nickname red devil cichlid.
The Texas cichlid, also known as the Rio Grande cichlid, is a freshwater fish of the cichlid family, and the only cichlid species that is native to the United States. It is found in the lower Rio Grande drainage in Texas near Brownsville and northeastern Mexico.
Paratilapia polleni is a medium-sized cichlid endemic to Madagascar. It is also a popular fish for display at public aquaria.
The three spot cichlid, also known as the trimac or red-eyed cichlid, is a species of cichlid from Mexico and Central America, from the subfamily Cichlasomatinae. It is rarely found as an aquarium fish. Although still included as a highly aberrant member of Cichlasoma by FishBase, other authorities such as Catalog of Fishes have moved it to the genus Amphilophus.
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