Crenichthys nevadae és una espècie de peix de la família dels goodèids i de l'ordre dels ciprinodontiformes.
És un peix d'aigua dolça, de clima tropical (26°C-30°C) i bentopelàgic.[4][6]
Es troba a Nevada (Estats Units).[4][7][8][9]
És inofensiu per als humans[4] i difícil de mantindre'l en un aquari.[10]
Crenichthys nevadae és una espècie de peix de la família dels goodèids i de l'ordre dels ciprinodontiformes.
The Railroad Valley springfish, Crenichthys nevadae, is a rare goodeid fish of the Great Basin of western United States, occurring naturally in just seven thermal springs of Railroad Valley in Nye County, Nevada.
The body gives a somewhat heavy or massive impression, particularly forward, the head being almost as wide as deep. Each side has a distinctive row of dark blotches, with pale bars in between. The pelvic fins are entirely absent, while the anal fin is large, with 13 rays. The dorsal fin is set far back on the body, just above the anal fin, and is somewhat smaller than the anal fin, with 12 rays.
This springfish is omnivorous, with animal food representing 2/3 or more of its consumption during the summer, primarily consisting of gastropods. Plant consumption is mostly filamentous algae. While intestine length is consistent with an omnivore, Sigler & Sigler suggest that the high water temperatures of the springfish habitat may demand the higher energy available with animal food.
The warm springs in which these are found range in temperature from 77 to 102 degrees F (25 to 39 C).
The Railroad Valley springfish is federally listed as a species threatened with extinction.[2][3] Its extremely limited range makes it vulnerable to competition from introduced species, and to habitat modifications. For instance, it was nearly eliminated from Duckwater Spring in the early 1980s by introduced channel catfish. The springfish has been introduced to Chimney Springs and in Hot Creek Canyon in Nye County, Nevada.
The Railroad Valley springfish, Crenichthys nevadae, is a rare goodeid fish of the Great Basin of western United States, occurring naturally in just seven thermal springs of Railroad Valley in Nye County, Nevada.
The body gives a somewhat heavy or massive impression, particularly forward, the head being almost as wide as deep. Each side has a distinctive row of dark blotches, with pale bars in between. The pelvic fins are entirely absent, while the anal fin is large, with 13 rays. The dorsal fin is set far back on the body, just above the anal fin, and is somewhat smaller than the anal fin, with 12 rays.
This springfish is omnivorous, with animal food representing 2/3 or more of its consumption during the summer, primarily consisting of gastropods. Plant consumption is mostly filamentous algae. While intestine length is consistent with an omnivore, Sigler & Sigler suggest that the high water temperatures of the springfish habitat may demand the higher energy available with animal food.
The warm springs in which these are found range in temperature from 77 to 102 degrees F (25 to 39 C).
The Railroad Valley springfish is federally listed as a species threatened with extinction. Its extremely limited range makes it vulnerable to competition from introduced species, and to habitat modifications. For instance, it was nearly eliminated from Duckwater Spring in the early 1980s by introduced channel catfish. The springfish has been introduced to Chimney Springs and in Hot Creek Canyon in Nye County, Nevada.
El goodeido primavera del valle de Railroad (Crenichthys nevadae), es un raro pez de la familia goodeidos, distribuido por la Gran Cuenca al oeste de América del Norte, que se ha encontrado en apenas siete manantiales termales en el valle de Railroad del condado de Nye (Nevada, Estados Unidos).[2]
El cuerpo es ahusado, sobre todo hacia delante, la cabeza es casi tan ancha como profunda. Cada lateral tiene patrones distintivos de manchas oscuras, con una línea pálida en el medio. Carece de aletas pélvicas, la aleta anal es grande, con 13 radios. La aleta dorsal está muy atrás en el cuerpo, justo encima de la aleta anal, y es algo más pequeña que la misma con 12 radios.
Éste pez primavera es omnívoro, con alimento de origen animal que representa 2/3 o más de su consumo durante el verano, que consiste principalmente de gasterópodos, Otra parte de su dieta consiste en algas filamentosas; la longitud de su intestino sugiere que se trata más bien de un pez omnívoro. Las temperaturas del agua de su hábitat suelen ser altas, por lo que está especie necesita obtener la mayor parte de su energía mediante el consumo de alimentos de origen animal.
Los manantiales de agua caliente en la que estos peces se encuentran están en un rango de temperatura entre 25ºC a 39ºC.
Aunque el Goodeido del valle no está en peligro de extinción, su rango tan limitado lo hace vulnerable a la competencia de especies introducidas, así como a las modificaciones del hábitat.[1] Por ejemplo, casi desaparece en algunos de los ríos en que habitaba en la década de 1980 por la introducción del bagre americano. El goodeido primavera ha sido introducido en varios ríos del condado de Mineral (Nevada).
Datos: Q3756319
Especies: Crenichthys nevadae
El goodeido primavera del valle de Railroad (Crenichthys nevadae), es un raro pez de la familia goodeidos, distribuido por la Gran Cuenca al oeste de América del Norte, que se ha encontrado en apenas siete manantiales termales en el valle de Railroad del condado de Nye (Nevada, Estados Unidos).
Crenichthys nevadae Crenichthys generoko animalia da. Arrainen barruko Goodeidae familian sailkatzen da.
Crenichthys nevadae Crenichthys generoko animalia da. Arrainen barruko Goodeidae familian sailkatzen da.
Crenichthys nevadae is een straalvinnige vissensoort uit de familie van de levendbarende tandkarpers (Goodeidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1932 door Hubbs.
Bronnen, noten en/of referenties
