bichir


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bichir

(bĭch`ər), common name for African freshwater fishes as of the family Polypteridae, and particularly for those of the genus Polypterus. Bichirs are among the most primitive of the ray-finned fishes, or Actinopterygii, the dominant group of modern fishes. The long, narrow body of Polypterus is 2 to 3 ft (60–90 cm) in length and covered by thick, rhombic scales made of an enamellike substance called ganoine. Such scales were also present in the earliest ray-finned fishes, now extinct, and are quite different from those of other living fishes. The dorsal fin of the bichir is split into a row of small, saillike finlets that are erected when the animal is agitated. Like the sharks and the rays, it has a pair of spiracles. The bichir seems especially adapted to life in dry environments. Instead of the swim bladderswim bladder,
large, thin-walled sac in some fishes that may function in several ways, e.g., as a buoyant float, a sound producer and receptor, and a respiratory organ. The swim bladder, or air bladder, is located in the dorsal portion of the body cavity and is filled with gases.
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 of most ray-finned fishes, it has a pair of lungs, somewhat like those of the lungfisheslungfish,
common name for any of a group of fish belonging to the families Ceratodontidae, Lepidosirenidae, and Protopteridae, found in the rivers of Australia, South America, and Africa, respectively.
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, which enables it to survive out of water for several hours. It also resembles the lungfishes in having a pair of external gills when newly hatched. The bichir is a bottom-dwelling fish, found in the Nile and in the rivers of W Africa. When these rivers overflow in late summer, it moves out to spawn in the flood marshes. It is sometimes caught as a food fish. In addition to the various species of Polypterus, the bichir family includes the reedfish, Erpetoichthys calabaricus, similar in character and distribution, but with a longer, more eellike form. Bichirs are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Actinopterygii, order Polypteriformes, family Polypteridae.
References in periodicals archive ?
Hector Bonilla--protagonista, por cierto, junto con Demian Bichir de la pelicula 7:19 la hora del temblor (2016), de Jorge Michel Grau, que aborda en medio del sismo de 1985 la corrupcion en la construccion en Mexico--, rememora que algunos legisladores y el INE decian, en un comienzo, que era ilegal que los partidos dieran el dinero.
The close-in fin hoisted more bichir body temporarily into the air, leaving less to rub along the ground.
The two actors also face competition from Gary Oldman, Jean Dujardin and Demian Bichir for the coveted award.
Demian Bichir also was a surprise nominee as best actor for "A Better Life," an immigrant drama that few people have seen.
Oldman - whose best actor rivals are Dujardin, George Clooney (The Descendants), Brad Pitt (Moneyball) and Mexican Demian Bichir (A Better Life) - called his Oscar nomination "amazing".
Maria Novaro, con Renee Coleman, Bruno Bichir y Gabriela Roel.
Review by: Brian OrndorfDirector: Steven SoderberghCast: Benicio Del Toro, Demian Bichir, Rodrigo Santoro, Catalina Sandino Moreno, Franka PotenteAaSteven SoderberghAAEs AoCheAo isnAAEt some stiff, imperial historical bio-pic to be worked over like an all-day, mocha-flavored lollipop.
Starring: Barbara Mori, Christian Meier, Manolo Cardona, Bruno Bichir.
Padraig is evilly and intelligently played by Juan Manuel Bernal (who will alternate with Bruno Bichir in the role).
Bogdan-Valentin Bichir, Director of Operations of the Bucharest office of Danubia Global Inc.
Bruno Bichir has joined the cast of the much anticipated DC live-action series "Titans.
Atentamente: Elena Poniatowska, Lorenzo Meyer, Hector Diaz Polanco, Armando Bartra, Paco Ignacio Taibo II, John Saxe Fernandez, Rafael Barajas El Fisgon, Ariel Rosales, Enrique Semo, Gabriela Rodriguez, Alejandro Bichir, Florence Toussaint, Alberto Montoya, Consuelo Sanchez, Yuriria Ituarriaga, Jose Reveles, Victoria Guillen, Javier Guerrero, John Ackerman, Irma Erendira Sandoval, Jorge Almanza, Leopoldo Rodarte, Oscar Menendez, Guillermo Zamora