have a unique predatory behavior. They stay close to shore and wait for prey to swim by. They usually keep lateral with a downed tree, to hide. Then they attack their prey, which usually involves jumping out of the water, to either catch large insects, other fish, or small birds in low hanging branches. This behavior has earned the fish the nickname "water-monkey" (Goulding 1980).
are not picky eaters. In a study of their stomach contents, the majority of food items included insects and spiders, most of which were beetles. Also found in the stomachs were crabs, snails, fish, birds, snakes, monkey feces and plant material. It is thought that the snakes and monkey feces were consumed during a flooding. The plant material was probably a result of the predatory behavior of the fish, as explained below (Goulding 1980).
are of great economic value to the local fisherman. According to Junk (1976) these fish provide the largest source of protein in comparison to other Amazon fish. Also, because of its low fat content, they are considered the most digestable and least likely to bring about sickness. are also of great value in the aquarium business, as noted by the sale of them on many commercial internet sites (Foeshe 2000, Smith 1981).
is thought by the Caboclo people of the Amazon to be very beneficial to women after they have recently given birth. In fact, they are one of the few things women are allowed to eat during this vulnerable point in life (Goulding 1980).
William Fink (editor), University of Michigan-Ann Arbor.
Kelly Birchmeier (author), University of Michigan-Ann Arbor.
living in the southern part of the New World. In other words, Central and South America.
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
uses smells or other chemicals to communicate
animals which must use heat acquired from the environment and behavioral adaptations to regulate body temperature
fertilization takes place outside the female's body
union of egg and spermatozoan
mainly lives in water that is not salty.
having a body temperature that fluctuates with that of the immediate environment; having no mechanism or a poorly developed mechanism for regulating internal body temperature.
offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).
having the capacity to move from one place to another.
specialized for swimming
the area in which the animal is naturally found, the region in which it is endemic.
reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body.
breeding is confined to a particular season
reproduction that includes combining the genetic contribution of two individuals, a male and a female
uses touch to communicate
the region of the earth that surrounds the equator, from 23.5 degrees north to 23.5 degrees south.
Froese, R. March 7, 2000. "Species Summary for Osteoglossum bicirrhosum" (On-line). Accessed October 25, 2000 at http://www.fishbase.org/Summary/SpeciesSummary.cfm?ID=6234.
Goulding, M. 1980. The Fishes and The Forest. Los Angeles: University of California Press.
Nico, L. July 18, 2000. "Nonindigenous Aquatic Species: Osteoglossum bicirrhosum" (On-line). Accessed October 19, 2000 at http://nas.er.usgs.gov/fishes/accounts/osteoglo/os_bicir.html.
Saint-Paul, U., J. Zuanon, M. Villacorta, M. Garcia, F. Noemi. March 2000. Fish communities in central Amazonian white- and blackwater floodplains. Environmental Biology of Fishes, 57(3): 235-250.
Smith, N. 1981. Man, Fishes, and The Amazon. New York: Columbia University Press.