Chalceus macrolepidotus és una espècie de peix de la família dels caràcids i de l'ordre dels caraciformes.
Menja cucs, larves d'insectes i peixets.[6]
Viu a zones de clima tropical entre 23°C - 28°C de temperatura.[7]
Es troba a Sud-amèrica, a les conques dels rius Negro i Orinoco, i rius costaners de Guaiana, Surinam i la Guaiana Francesa.[5]
Chalceus macrolepidotus és una espècie de peix de la família dels caràcids i de l'ordre dels caraciformes.
The pinktail chalceus (Chalceus macrolepidotus),[1][2] also called the pinktail characin,[3][4] is a species of freshwater fish of the family Chalceidae found in South America. It is one of five fish in the genus Chalceus, and is the type species of the genus.
The pinktail chalceus is a small, light-colored freshwater fish with a tail that is usually dark red to pink and is much more intensely colored than the rest of the animal. It has large, noticeable scales and reaches 24.5 cm SL, making it the largest known member of Chalceus.[2] The smallest is Chalceus epakros.[5]
Chalceus epakros, before being classified, was regularly misidentified as either the pinktail chalceus or the yellowfin chalceus (Chalceus erythrurus).[6] C. epakros and the pinktail can be told apart because the pinktail is uniform silvery in color, whereas C. epakros has a line down the middle of either side that reaches its caudal peduncle.
The common name "pinktail chalceus" comes from its caudal fin, which is typically much more saturated in color than the main body.[6] The specific name macrolepidotus means "large scale" in Latin, which is considered an accurate reflection of its scale size;[7] the scales themselves are cycloid.[6] The original description gave it the common name "large-scaled chalceus".[8]
The genus name Chalceus comes from the Greek word chalkos, which means brass or copper.[2] This name was given based on the observation that the scales on the type specimen were coppery ("sometimes golden") when preserved in alcohol.[9]
Upon description by French naturalist Georges Cuvier in 1818, the pinktail chalceus was placed into the new genus Chalceus.[10] By way of monotypy, it ended up as the type species therein.[11][12] Since then, several additions and retractions have occurred, as well as a redescription of the genus in the year 2004, and there are now five accepted species in total, C. macrolepidotus included.[3][6]
The original scientific name given by Cuvier has remained its accepted scientific name.[1] Synonyms include Brycon macrolepidotus, Chalceus ararapeera, Chalceus erythrurus, Pellegrina heterolepsis, and Creagrutus pellegrini.[2][7] The name Chalceus erythrurus has since been assigned to a different species in the genus altogether.[13]
The yellowfin chalceus, C. erythrurus, was briefly classified as Chalceus macrolepidotus iquitensis, a subspecies of the pinktail chalceus, by biologist Shoji Nakashima in 1941.[14]
The pinktail chalceus is found in well-oxygenated (fast-flowing) waters in South America; specifically, it is found in French Guiana, Guyana, and Suriname, inhabiting the Orinoco and Negro Rivers.[2] C. epakros and the pinktail are the only two Chalceus species known to occur in Guyana.[15] It has been non-natively established in Mexico as well, though it is not considered invasive by the Global Register of Introduced and Invasive Species (GRIIS).[16]
The pinktail chalceus is a fast-moving and active fish that stays near the river's surface.[17] It tends to cluster together in schools.[18] Its diet generally consists of small invertebrates;[2] when searching for food, it may leap out of the water to target a bug above the surface.
It is notably skittish.[17] This is a trait it shares with the yellowfin chalceus.[19]
The pinktail chalceus is moderately popular in the aquarium trade, though it requires a larger aquarium than many prospective keepers have access to (55 gallons or above).[20] It has enough of a reputation for jumping out of its tank (like its behavior in the wild) that sellers regularly warn buyers about it.[21] This is more likely to happen if the pinktail is startled and does not have anyplace to take cover, such as plants or driftwood hideaways.[17]
Aquarists with adequate space to keep pinktails are advised to have a shoal larger than 6 to 8 specimens; anything lower, and squabbling is likely to happen.[7][22] Because they are a fast and active species, the tank they live in doesn't need extraneous decor, but offering cover for them to hide in may make them more relaxed.[22]
The pinktail chalceus is featured in the scuba diving video game Endless Ocean 2 as one of several fish inhabiting the game's Cortica River area (a fictitious tributary of the Amazon River, with a confluence at longitude 53° west). This is one of very few instances of a chalceus being depicted in a video game.
{{cite journal}}: Cite journal requires |journal= (help) The pinktail chalceus (Chalceus macrolepidotus), also called the pinktail characin, is a species of freshwater fish of the family Chalceidae found in South America. It is one of five fish in the genus Chalceus, and is the type species of the genus.
Chalceus macrolepidotus es una especie de pez de la familia Characidae en el orden de los Characiformes.
Los machos pueden llegar alcanzar los 24,50 cm de longitud total.[2]
Come gusanos, larvas de insectos y peces pequeños.
Vive en zonas de clima tropical entre 23 °C - 28 °C de temperatura.
Se encuentran en Sudamérica: cuencas de los ríos Negro y Orinoco, y ríos costeros de Guayana, Surinam y la Guayana Francesa.
Chalceus macrolepidotus es una especie de pez de la familia Characidae en el orden de los Characiformes.
Chalceus macrolepidotus Chalceus generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Characidae familian.
Chalceus macrolepidotus Chalceus generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Characidae familian.
Chalceus macrolepidotus is een straalvinnige vissensoort uit de familie van de karperzalmen (Characidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1818 door Cuvier.
Bronnen, noten en/of referenties
O saguari (Chalceus macrolepidotus) é um peixe teleósteo caraciforme da família dos caracídeos de distribuição na Amazônia. Chega a medir até 25 cm de comprimento, possui o dorso cinza-azulado, os flancos cinza-claros e o ventre prateado, sendo uma espécie tida como ornamental. Também é conhecido pelos nomes de arari, araripirá e são-pedro.[1]
O saguari (Chalceus macrolepidotus) é um peixe teleósteo caraciforme da família dos caracídeos de distribuição na Amazônia. Chega a medir até 25 cm de comprimento, possui o dorso cinza-azulado, os flancos cinza-claros e o ventre prateado, sendo uma espécie tida como ornamental. Também é conhecido pelos nomes de arari, araripirá e são-pedro.
本魚分布於南美洲蘇利南、蓋亞那及法屬圭亞那的尼格羅河、奧里諾科河流域。
本魚青壯年時體色為粉紅色。身體背部為金橄欖綠色，側腹部則呈銀色。鱗片大而錯落有致，尤其是在側線上方更為明顯。頭部相當短，嘴的上唇突出。體長可達24.5公分。
本魚棲息在溶氧量高的水域，性情活潑，屬雜食，具侵略性，以蠕蟲、小魚、昆蟲等為食。
為當地的食用魚，另可作為觀賞魚。
