Ptychochromis insolitus és una espècie de peix de la família dels cíclids i de l'ordre dels perciformes.
Viu a zones de clima tropical de l'illa de Madagascar.[4]
Hom creu que ha esdevingut extinta en estat salvatge a causa de la construcció de preses al riu Mangarahara (Madagascar) i només en queden dos exemplars a la Zoological Society of London.[5]
Ptychochromis insolitus és una espècie de peix de la família dels cíclids i de l'ordre dels perciformes.
Ptychochromis insolitus, also known as the Mangarahara cichlid or joba mena, is a species of cichlid endemic to certain river systems in northern Madagascar.[2] This critically endangered fish is threatened by habitat loss and competition from introduced species; after the last-known female was killed during a breeding attempt, its conservation received significant international attention as London Zoo launched a media campaign to identify any remaining individuals.[3] A remnant population was discovered by aquaculture entrepreneur Guy Tam Hyock in 2013, and breeding programs in Madagascar and at Toronto Zoo have resulted in thousands of successful hatchlings.[4]
The Mangarahara cichlid was first described as a new species in 2006 from the Amboaboa and Mangarahara Rivers near Mandritsara in northern Madagascar.[2] Prior to its official description, it was sometimes known as Ptychochromis sp. nov. "Joba mena" or Ptychochromis sp. nov. "Mangarahara".[2] "Joba mena" translates to "red girl," identifying the long, ragged, red-bordered fins of the male fish. This species can reach a standard length of 10 inches or 25.8cm.[5] It was given the species name insolitus (the Latin word for 'queer' or 'unusual') in part because of its peculiar appearance, featuring long tooth- or comb-like structures called cteni on many of its scales.[2] This name was also chosen because after identifying a wild-caught holotype specimen, researchers investigated two captive-raised individuals that strangely lacked several of the defining characteristics for which the species was described.[2] Researchers suggested this could, among other possibilities, indicate an unrecorded hybridization event or the existence of an additional, similar species or subspecies.[2]
It was originally listed as Critically Endangered in 2006 when they were first described, but on further research they concluded that they were in fact Extinct in the Wild. It is listed as Extinct in the Wild by the IUCN, but until its rediscovery in 2013, it was feared that the last remaining wild population had disappeared as a result of ongoing habitat loss and competition from introduced species.[3] Two cichlids from another genus, Paretroplus nourissati and P. gymnopreopercularis, along with a round herring, Sauvagella robusta, are restricted to the same region as Ptychochromis insolitus, and may be facing similar risks.[2][6]
Although captive breeding programs have met with some success, and although it continues to occur in the wild, the habitat of this species remains under significant threat, and thus, opportunities for reintroduction remain unclear.[7]
In the 1990s, a French ichthyologist collected several specimens of the fish from its wild habitat.[8] An anonymous hobbyist couple bred those specimens, and in 2002, the couple donated a dozen juvenile Mangarahara cichlids to London Zoo.[8] At the time, little was known about the condition of the species' native habitat, and Brian Zimmerman, Chief Curator of the Zoological Society of London, believed that other institutions housed the species as well.[7] Territoriality and rivalry among the maturing siblings contributed to several cichlid deaths, and by 2005, only two male individuals remained in the zoo's collection.[7]
In 2006, London Zoo contacts in Madagascar reported that the Mangarahara River had dried up as a result of dam construction and water diversion for rice farming in the area.[7] The fish was declared extinct in the wild.[7] As the only institution with a female specimen of the cichlid in its care, Aquarium Berlin attempted to breed its male cichlid with its female cichlid in 2012. Approximately ten days after the two individuals were moved to a spawning tank, Aquarium Berlin announced that the male cichlid had killed its would-be mate.[7][9]
In 2013, only three specimens were known to exist in captivity - two males in London Zoo and one male in Aquarium Berlin.[8] Those in London Zoo were at least eleven years old, and little was known about the life expectancy of the species.[8] London Zoo published an appeal in May 2013, asking for any information about potentially suitable female Mangarahara cichlids in private collections.[10] After leads from collectors in Venezuela, China, Australia, Canada, and elsewhere did not surface any living cichlids, Zimmerman was contacted by hotelier, tilapia farmer, and "Fish Whisperer" Guy Tam Hyock.[7][11] Guy Tam Hyock offered to show representatives from London Zoo to a small pond near Marotandrano where he believed a population of the fishes remained.[8]
In late 2013, Toronto Zoo and London Zoo confirmed that a remnant population existed in the wild at the location Guy Tam Hyock specified.[12] The last 18 wild individuals, including some females, were caught and moved to Guy Tam Hyock's conservation aquaculture facility in Andapa, Madagascar.[3] Successful captive breeding was observed at said facility shortly thereafter, and in September 2014, several individuals were brought to Toronto Zoo.[13] On Thursday, September 15, 2016, Toronto Zoo announced the cichlid had successfully bred at their facility, issuing at least 20 hatchlings.[13]
9. Podcast https://www.oxfordsparks.ox.ac.uk/content/where-are-all-mangarahara-cichlid-hiding
Ptychochromis insolitus, also known as the Mangarahara cichlid or joba mena, is a species of cichlid endemic to certain river systems in northern Madagascar. This critically endangered fish is threatened by habitat loss and competition from introduced species; after the last-known female was killed during a breeding attempt, its conservation received significant international attention as London Zoo launched a media campaign to identify any remaining individuals. A remnant population was discovered by aquaculture entrepreneur Guy Tam Hyock in 2013, and breeding programs in Madagascar and at Toronto Zoo have resulted in thousands of successful hatchlings.
Ptychochromis insolitus es una especie de peces de la familia Cichlidae en el orden de los Perciformes. Se trata de una especie endémica de los ríos Amboaboa and Mangarahara cerca de Mandritsara en el norte de Madagascar.[1]
A pesar de que la UICN clasifica su estado de conservación como de peligro crítico,[2] se cree que en realidad se encuentra extinto en la vida silvestre, debido particularmente a la construcción de presas en los ríos de donde la especie es oriunda. Hasta hace poco se sabía de la existencia de tres machos vivos en cautividad, dos en el zoo de Londres, y uno en el Acuario de Berlín. Recientemente en diciembre de 2013 se ha encontrado en el norte de Madagascar una pequeña población salvaje.
Vive en zonas de clima tropical.
Se encuentra en Madagascar.
Ptychochromis insolitus es una especie de peces de la familia Cichlidae en el orden de los Perciformes. Se trata de una especie endémica de los ríos Amboaboa and Mangarahara cerca de Mandritsara en el norte de Madagascar.
A pesar de que la UICN clasifica su estado de conservación como de peligro crítico, se cree que en realidad se encuentra extinto en la vida silvestre, debido particularmente a la construcción de presas en los ríos de donde la especie es oriunda. Hasta hace poco se sabía de la existencia de tres machos vivos en cautividad, dos en el zoo de Londres, y uno en el Acuario de Berlín. Recientemente en diciembre de 2013 se ha encontrado en el norte de Madagascar una pequeña población salvaje.
Ptychochromis insolitus Ptychochromis generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cichlidae familian.
Ptychochromis insolitus Ptychochromis generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cichlidae familian.
Ptychochromis insolitus est une espèce de poissons de la famille des Cichlidae. Endémique de Madagascar, son habitat naturel a été détruit et il n'en resterait que quelques spécimens d'aquarium encore en vie. En 2013, le zoo de Londres qui possédait encore des mâles a lancé un appel à tous les aquariophiles dans l'espoir de former quelques couples reproducteurs et tenter de sauver l'espèce en grand danger d'extinction[2]. À la suite de cet appel, une expédition internationale a découvert une population sauvage dans une rivière presque asséchée. 18 spécimens ont été confiés à une pisciculture malgache, ils constituent les espoirs pour la conservation de l'espèce[3],[4].
(Sparks and Stiassny 2006). Dans Buntbarsche Bulletin, n° 241, août 2007.
Ptychochromis insolitus est une espèce de poissons de la famille des Cichlidae. Endémique de Madagascar, son habitat naturel a été détruit et il n'en resterait que quelques spécimens d'aquarium encore en vie. En 2013, le zoo de Londres qui possédait encore des mâles a lancé un appel à tous les aquariophiles dans l'espoir de former quelques couples reproducteurs et tenter de sauver l'espèce en grand danger d'extinction. À la suite de cet appel, une expédition internationale a découvert une population sauvage dans une rivière presque asséchée. 18 spécimens ont été confiés à une pisciculture malgache, ils constituent les espoirs pour la conservation de l'espèce,.
Mangaraharas cihlīda, zināma arī pēc tās latīniskā nosaukuma Ptychochromis insolitus, ir cihlīdu dzimtas suga, kas endēmiska ziemeļu Madagaskaras upēm Amboaboai un Mangaraharai.[1] Suga atradās uz izmiršanas robežas,[2] un pastāvēja bažas, ka tā savvaļā ir izmirusi. Tomēr 2013. gadā pusizžuvušā Mangaraharas pietekā tika atrasta neliela saglabājusies populācija.[3] Cihlīda sasniedz 5,5 cm garumu.
2013. gadā bija zināmas Mangaraharas cihlīdas — divi tēviņi Londonas zooloģiskajā dārzā un viena mātīte Berlīnes akvāriumā, kas nomira šī paša gada maijā. Londonas zoo vērsās ar lūgumu pie visiem speciālistiem un akvāriju zivju cienītājiem, lai atrastu mātīti pēdējiem zināmajiem šīs sugas tēviņiem.[4]
Atbilde atnāca no zivtiņu dzimtenes Madagaskaras. Kāds vietējais biznesmenis pavēstīja, ka viņš redzējis vienu šādu cihlīdu gandrīz pilnīgi iznīcinātā tās dabiskajā vidē. Steidzīgi zoodārza organizētā ekspedīcija vienā no pusizsīkušām Mangaraharas upes pietekām atklāja nelielu saglabājušos populāciju, kurā bija arī mātītes. 18 tur mītošās cihlīdas tika izķertas un pārvietotas uz salas privāto zivju saimniecību. Londonas zooloģiskais dārzs patlaban izstrādā programmu, lai atjaunotu cihlīdu skaitu.[3]
Mangaraharas cihlīda, zināma arī pēc tās latīniskā nosaukuma Ptychochromis insolitus, ir cihlīdu dzimtas suga, kas endēmiska ziemeļu Madagaskaras upēm Amboaboai un Mangaraharai. Suga atradās uz izmiršanas robežas, un pastāvēja bažas, ka tā savvaļā ir izmirusi. Tomēr 2013. gadā pusizžuvušā Mangaraharas pietekā tika atrasta neliela saglabājusies populācija. Cihlīda sasniedz 5,5 cm garumu.
Ptychochromis insolitus is een straalvinnige vissensoort uit de familie van de cichliden (Cichlidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 2006 door Stiassny & Sparks.
De vis die ook wel mangarahara-vis genoemd wordt is bijna uitgestorven, er zijn nog drie exemplaren bekend uit dierentuinen, allen mannetjes.[2]
Bronnen, noten en/of referenties
Ptychochromis insolitus é uma espécie de peixe da família Cichlidae. A espécie foi proposta em 2001 como Ptychochromis sp. nov. "Joba mena" ou Ptychochromis sp. nov. "Mangarahara", sendo descrita formalmente apenas em 2006.[2]
Endêmica de Madagascar, pode ser encontrada nos rios Amboaboa e Mangarahara, próximo de Mandritsara, no norte da ilha. Está ameaçada por perda de habitat e pela introdução de espécies exóticas.[1] Acredita-se que a espécie esteja extinta na natureza, restando apenas três indivíduos machos em cativeiro, dois no Zoológico de Londres e um no Zoológico de Berlim.[3]
Ptychochromis insolitus é uma espécie de peixe da família Cichlidae. A espécie foi proposta em 2001 como Ptychochromis sp. nov. "Joba mena" ou Ptychochromis sp. nov. "Mangarahara", sendo descrita formalmente apenas em 2006.
Endêmica de Madagascar, pode ser encontrada nos rios Amboaboa e Mangarahara, próximo de Mandritsara, no norte da ilha. Está ameaçada por perda de habitat e pela introdução de espécies exóticas. Acredita-se que a espécie esteja extinta na natureza, restando apenas três indivíduos machos em cativeiro, dois no Zoológico de Londres e um no Zoológico de Berlim.
Ptychochromis sp. nov. 'Joba mena' là một loài cá thuộc họ Cichlidae. Nó là loài đặc hữu của Madagascar. Môi trường sống tự nhiên của nó là các con sông. Nó bị đe dọa do mất môi trường sống.
Bài viết liên quan đến Họ Cá hoàng đế này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Ptychochromis sp. nov. 'Joba mena' là một loài cá thuộc họ Cichlidae. Nó là loài đặc hữu của Madagascar. Môi trường sống tự nhiên của nó là các con sông. Nó bị đe dọa do mất môi trường sống.
波鰭褶麗魚，為輻鰭魚綱鱸形目隆頭魚亞目慈鯛科的其中一種，分布於非洲馬達加斯加淡水流域，體長可達5.5公分，棲息在底層水域，生活習性不明。
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