The frail gourami (Ctenops nobilis) or noble gourami is a mouth brooding species of gourami native to northeastern India and Bangladesh .[1][2] This species grows to a length of 10 cm (3.9 in). It is only seldom found in the aquarium trade, courtesy of its extreme sensitivity to shipping stress and high levels of aggression.[3] This species is the only known member of its genus.[2]
Frail gourami
Male gourami showing breeding and/or defensive colors and posture
As these fish grow as juveniles, socialization is shown, but as maturity is reached, then their entire personalities flip upside down with high levels of aggression to others of their kind and potentially other fish as well.[citation needed]
Life cycleedit
Females of this species have a more slimmer head and jaw shape compared to males. Males have a rounder jaw for mouth brooding (carrying eggs in mouth). The ritual can last for many hours. The female, after laying the eggs, diligently collects every one of them and expels them from her mouth for the male to hold with his anal fin and place in his mouth. They continue this process until every egg is laid and guard the area at the same time. The males are then the parental egg-bearer and gains a cryptic and strange marble patterning. Feeding then is greatly reduced in the male, or ceases altogether. The eggs stay in his mouth for about 7-20 days, after this releases free-swimming fry. This intelligent species shows a learning process in younger or inexperienced individuals in gaining knowledge of how to hold the eggs properly without swallowing them.
In the Suthimari River basin, West Bengal frail gouramis were collected in early September in the early afternoon alongside Danio rerio from a habitat containing relatively clear, moderately-flowing water with some suspended sediment and there was no aquatic vegetation present.[citation needed]
Referencesedit
^ abVishwanath, W. (2010). "Ctenops nobilis". IUCN Red List of Threatened Species. 2010: e.T166599A6244543. doi:10.2305/IUCN.UK.2010-4.RLTS.T166599A6244543.en. Retrieved 20 November 2021.
^ abFroese, Rainer; Pauly, Daniel (eds.) (2014). "Ctenops nobilis" in FishBase. February 2014 version.
^"Ctenops nobilis (Frail Gourami) — Seriously Fish".
January 01, 1970
frail, gourami, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, december, 2. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Frail gourami news newspapers books scholar JSTOR December 2023 Learn how and when to remove this message The frail gourami Ctenops nobilis or noble gourami is a mouth brooding species of gourami native to northeastern India and Bangladesh 1 2 This species grows to a length of 10 cm 3 9 in It is only seldom found in the aquarium trade courtesy of its extreme sensitivity to shipping stress and high levels of aggression 3 This species is the only known member of its genus 2 Frail gourami Male gourami showing breeding and or defensive colors and posture Conservation status Near Threatened IUCN 3 1 1 Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Class Actinopterygii Order Anabantiformes Family Osphronemidae Subfamily Luciocephalinae Genus CtenopsMcClelland 1845 Species C nobilis Binomial name Ctenops nobilisMcClelland 1845 Synonyms Osphronemus nobilis McClelland 1845 Contents 1 Growth habits 2 Life cycle 3 Natural habitat 4 ReferencesGrowth habits editAs these fish grow as juveniles socialization is shown but as maturity is reached then their entire personalities flip upside down with high levels of aggression to others of their kind and potentially other fish as well citation needed Life cycle editFemales of this species have a more slimmer head and jaw shape compared to males Males have a rounder jaw for mouth brooding carrying eggs in mouth The ritual can last for many hours The female after laying the eggs diligently collects every one of them and expels them from her mouth for the male to hold with his anal fin and place in his mouth They continue this process until every egg is laid and guard the area at the same time The males are then the parental egg bearer and gains a cryptic and strange marble patterning Feeding then is greatly reduced in the male or ceases altogether The eggs stay in his mouth for about 7 20 days after this releases free swimming fry This intelligent species shows a learning process in younger or inexperienced individuals in gaining knowledge of how to hold the eggs properly without swallowing them Natural habitat editThese micro predators live in the clear overgrown slow flowing waters of eastern India northern Bangladesh the Sikkim state west Bengal Bihar the Assam states and just discovered Nepal This adaptive species have also been recorded where foliage and vegetation is scarce during the months of June and July monsoons are common Temperatures range from 59 90 degrees Fahrenheit or 15 32 degrees Celsius with the cold extremes at the most northerly reaches of its range Its habitats are subjugated to severe seasonal change with water change volume and flow in which they persevere At the when living alongside the catfish Pseudolaguvia muricata in Bangladesh the habitat was a slow moving shallow stream containing clear water with a substrate of sand and organic detritus This gourami was recorded here with sympatric species including Barilius barna B bendelisis B tileo Devario devario Oreichthys cosuatis Psilorhynchus sucatio Lepidocephalichthys guntea Acanthocobitis botia Schistura corica S savona Amblyceps mangois Mystus bleekeri Olyra longicaudata Conta conta Hara jerdoni Pseudolaguvia ribeiroi P shawi Aplocheilus panchax Xenentodon cancila Microphis deocata Chanda nama Pseudambassis baculis Pseudambassis ranga Channa gachua Badis badis Nandus nandus Glossogobius giuris Mastacemelus pancalus and Tetraodon cutcutia citation needed nbsp Illustration of frail gourami In the Suthimari River basin West Bengal frail gouramis were collected in early September in the early afternoon alongside Danio rerio from a habitat containing relatively clear moderately flowing water with some suspended sediment and there was no aquatic vegetation present citation needed References edit a b Vishwanath W 2010 Ctenops nobilis IUCN Red List of Threatened Species 2010 e T166599A6244543 doi 10 2305 IUCN UK 2010 4 RLTS T166599A6244543 en Retrieved 20 November 2021 a b Froese Rainer Pauly Daniel eds 2014 Ctenops nobilis in FishBase February 2014 version Ctenops nobilis Frail Gourami Seriously Fish Retrieved from https en wikipedia org w index php title Frail gourami amp oldid 1215645279, wikipedia, wiki, book, books, library,