Mature females measure just 7.9 millimeters — less than one third of an inch! The largest specimen known is only 8.4 mm long. [1], The three currently recognized species in this genus are:[2]. Micromegethes is Greek for small in size, and is used as a noun in apposition. In 1994, the same ichthyologists had already discovered in Sarawak (Malaysian part of Borneo) another miniature species of the same genus Paedocypris. This puts it among the top three of smallest known fish (and vertebrate) species, its two rivals being Schindleria [11], Kottelat, Britz, H. H. Tan & K. E. Witte, 2006. Flap over fishes: Who's the smallest of them all? [3] Members of this genus are habitat specialists that only live in acidic water. Their miniature transparent bodies lack the typical features characteristic of adult fish, for instance a bony skull structure around its brain, and it retains the postanal larval fin-fold along the ventral edge of the caudal peduncle, characteristic of fish larvae. Their miniature transparent bodies lack the typical features characteristic of adult fish, for instance a bony skull structure around its brain, and it retains the postanal larval fin-fold along the ventral edge of the caudal peduncle, characteristic of fish larvae. Questa pagina è stata modificata per l'ultima volta il 14 ott 2020 alle 11:47. [9], Paedocypris progenetica lives in the blackwater peat swamps of the Indonesian islands of Sumatra and Bintan. Scientists discovered it living in the forest swamps on the Indonesian island of Sumatra. [4] Sundadanio and Paedocypris were found to share a sister group relationship, supporting its close relationship to danionin genera; however, this study included danionins among the subfamily Rasborinae.[5]. [1] P. micromegethes lives in the peat swamps of Sarawak in northern Borneo, Malaysia. Paedocypris is a genus of tiny cyprinid fish found in swamps and streams on the Southeast Asian islands of Borneo, Sumatra and Bintan. La livrea presenta un corpo trasparente (con varie sfumature dall'azzurro al rosso sangue) che lascia vedere perfettamente gli organi interni. Males also have a pad of keratinized skin in front of the pelvic fins. La femmina depone da 4 a 20 uova, fecondate esternamente dal maschio che però è dotato di minuscoli ganci controllati da potenti muscoli, atti ad agganciarlo al corpo della femmina e permettere la fecondazione sicura delle uova. https://it.wikipedia.org/w/index.php?title=Paedocypris_progenetica&oldid=116047396, Voci con Tassobox - Classe Actinopterygii, licenza Creative Commons Attribuzione-Condividi allo stesso modo. [7] The smallest mature P. progenetica female is only 7.9 mm (0.31 in) in standard length, smaller than the female of any other vertebrate species, including those of P. amauensis. A mature female specimen had a length of only 7.9 mm (0.31 in). These modified fins are thought to be used to grasp the female during mating, or to keep position over a spawning surface. Questa specie è diffusa in Indonesia, nell'isola di Sumatra, dove abita paludi con acque molto acide (pH 3) e scure. Le dimensioni estremamente minute (i maschi raggiungono i 10 mm di lunghezza e le femmine 7,9 mm) permettono a questo pesce di essere considerato il più piccolo pesce osseo e anche tra i vertebrati più piccoli esistenti in natura (primato strappato nel 2008 dalle rane Paedophryne amauensis e Paedophryne swiftorum). Le dimensioni estremamente minute (i maschi raggiungono i 10 mm di lunghezza e le femmine 7,9 mm) permettono a questo pesce di essere considerato il più piccolo pesce osseo e anche tra i vertebrati più piccoli esistenti in natura (primato strappato nel 2008 dalle rane Paedophryne amauensis e … [1], Paedocypris progenetica has been claimed to be the one of smallest known species of fish in the world. The world’s smallest fish is Paedocypris progenetica, and was only recently discovered in the last decade. However, their small ranges and specialised habitat make them extremely vulnerable to habitat loss, such as drainage of peat swamps and fires, and some populations have already disappeared. Paideios is Greek for children and cypris is Greek for Venus and is a common suffix for cyprinid genera; the gender is feminine. RMBR: So which is the smallest species of fish in the world? [1][10] In Malaysia alone, it has been estimated that—in addition to Paedocypris—up to 15% of the freshwater fish species are associated with peat swamps,[1] and based on current destruction rates all Bornean and Sumatran peatlands may be gone by 2040. Questa specie, così come le altre due appartenenti al genere Paedocypris, è stata scoperta e descritta solamente a partire dal 2006 da un'équipe di scienziati di Singapore. Paedocypris progenetica, a distant cousin of the carp, is thin, transparent, and the size of a large mosquito when fully grown. The genus, Paedocyrpis, and two species, Paedocypris progenetica and Paedocypris micromegethes, were first described in 2006. [1] P. carbunculus is found in peat swamps in Central Kalimantan, Borneo, Indonesia. P. progenetica presenta un corpo snello e allungato, con la particolare conformazione della testa che, protesa in avanti, non protegge il cervello con una scatola cranica completa. [1], Male individuals of the anglerfish species Photocorynus spiniceps have been documented to be 6.2–7.3 mm (0.24–0.29 in) at maturity, and thus claimed to be a smaller species. [1], Paedocypris is considered a danionin genus by Tyson Roberts. "The "Celestial pearl danio", a new genus and species of colourful minute cyprinid fish from Myanmar (Pisces: Cypriniformes)", "Evolution of miniaturization and the phylogenetic position of, "Ecological guild evolution and the discovery of the world's smallest vertebrate". Two species were discovered and identified by ichthyologists Maurice Kottelat from Switzerland and Tan Heok Hui from the Raffles Museum of Biodiversity Research and the National University of Singapore in 1996. Le pinne sono allungate e trasparenti.
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