Results 11 to 20 of about 167 (127)
Tolerance to temperature, pH, ammonia and nitrite in cardinal tetra, Paracheirodon axelrodi, an amazonian ornamental fish [PDF]
Acta Amazonica, 2008 Poor water quality condition has been pointed out as one of the major causes for the high mortality of ornamental fishes exported from the state of Amazonas, Brazil. The purpose of the current study was to define water quality standards for cardinal tetra (Paracheirodon axelrodi), by establishing the lower and higher for lethal temperature (LT50 ...
Marcon J L +2 more
exaly +6 more sources
Phycocharax rasbora, a new genus and species of Brazilian tetra (Characiformes: Characidae) from Serra do Cachimbo, rio Tapajós basin. [PDF]
PLoS ONE, 2017 A new genus and species of characid fish is described from rio Braço Norte, a tributary of rio Teles Pires, Tapajós basin, Mato Groso, Brazil. The new taxa can be diagnosed from the remaining characids by a unique combination of characters that includes ...
Willian Massaharu Ohara +2 more
doaj +2 more sources
Acta Amazonica, 2004 The cardinal tetra (Paracheirodon axelrodi) is the most intensively commercialized ornamental fish from the Rio Negro Basin (Amazonas State, Brasil). Analysis of the stomach and gut contents of fish caught in their natural habitats show conclusively that
Ilse Walker
doaj +3 more sources
Do body colour and sociability impact scototaxis response of fish? [PDF]
Scientific ReportsScototaxis test is an anxiety-like test used by behavioural neuroscientists consisting in the assessment of dark/light preference of laboratory animals. This test has been widely used in fish.
Alessandra Pecunioso +2 more
doaj +2 more sources
Estudio Histológico del Tracto Digestivo del Neón Cardenal Paracheirodon axelrodi (Characidae) [PDF]
International Journal of Morphology, 2011 Paracheirodon axelrodi es el pez ornamental que mas se exporta en Colombia. Sin embargo, se desconocen varios aspectos de su biologia basica. Se estudio la histologia del tracto digestivo. Se sacrificaron 15 ejemplares (MS 222, 0,5 g/L), fijados en formaldehido al 4 % y decalcificados con acido nitrico 7 %. Se siguio el procedimiento para H&E.
Gómez-Ramírez, E +4 more
exaly +3 more sources
Joint effects of elevated copper and temperature in juvenile Tambaqui exposed in black and white waters of the Amazon [PDF]
Journal of Fish Biology, Volume 108, Issue 3, Page 949-962, March 2026.Abstract This study aimed to investigate how exposure to elevated water temperature and metal concentration jointly affect the physiology of Amazonian fish. Aboard a research vessel in the Amazon, we evaluated the effects of water temperature (river T°C at 31.5°C and a + 4°C increase to 35.5°C) and of 3‐h copper (Cu) exposure (up to 600 μg/L) in ...
Anne Crémazy +6 more
wiley +2 more sources
Early Development Of The Tetra Cardinalfish: Paracheirodon Axelrodi Schultz 1956
International Journal of Islamic Education, Research and MulticulturalismCardinal tetra, Paracheirodon axelrodi, merupakan ikan hias yang populer di Indonesia dan mancanegara. Penyumbang ikan hias akuarium di Rio Negro, Amerika Selatan. Komoditas ekspor ikan hias ke Amerika, Jepang dan Singapura.
Sawung Cindelaras +2 more
doaj +2 more sources
The food spectrum of the cardinal - tetra (Paracheirodon axelrodi, Characidae) in its natural habitat [PDF]
Acta Amazonica, 2004 The cardinal tetra (Paracheirodon axelrodi) is the most intensively commercialized ornamental fish from the Rio Negro Basin (Amazonas State, Brasil). Analysis of the stomach and gut contents of fish caught in their natural habitats show conclusively that the cardinal is essentially a predator, feeding on the mesofauna that adheres to submerged litter ...
exaly +4 more sources
Actualidades Biológicas, 2013 This work identified and described external and internal brain anatomy of Paracheirodon axelrodi (Schultz, 1956, Characiformes: Characidae). 28 individuals were sacrificed using bioethical protocols for research animal use.
Martha J. Obando-Bulla +5 more
doaj +1 more source
Influência do Transporte na Relação Peso-Comprimento e Fator de Condição de Paracheirodon axelrodi (Characidae) [PDF]
Biota Amazônia, 2015 Foi comparada a relacao peso-comprimento (RPC) e fator de condicao relativo (Kn) de Paracheirodon axelrodi de habitat natural apos sua captura e transporte, simulando fielmente algumas etapas do processo de extracao de peixes ornamentais amazonicos.
Marcos Tavares-Dias
exaly +2 more sources