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CHARACINS


CHARACIDAE FAMILY

The Characidae or Characin Family are found in numerous types of water throughout South America. These fish require lots of oxygen in the water and are sensitive to noise. Characins can be divided into subfamilies including Characidiinae, Characinae, and Serrasalminae.

CHARACIDIINAE SUB-FAMILY

The Characidiinae or Darter sub-family consists of the genus Characidium and more than 50 species. Darters live near the substrate, usually in fast-flowing waters.

Darter Characin
[Pictures]
Characidium species
SYN: None
PD: A fish with a relatively flat-bellied profile. The body is elongated and the fish is usually seen resting on its pectoral fins. The body color depends on the species as does the body pattern. The fins are transparent on nearly all species.
SIZE: To 3" (8 cm)
SS: None
HAB: Clear streams in South America from the Rio de la Plata to the Orinoco.
S: bottom
TANK: 24" (60 cm) or 15 gallons (57 L). The bottom should be fine gravel or, better, sand. Leave open areas. Provide a moderate to strong current with good aeration.
WATER: pH 5.5-7.5 (7.0), dH 2-25 (6), 64-81°F (18-27°C)
SB: A peaceful loner that should be kept singly or in large groups of eight or more fish. If kept in groups smaller than about eight, fish act aggressively. Combine with small to medium-sized fish of upper swimming levels. An inquisitive fish, always investigating the tank floor.
SC: Tetras, Hatchetfish, Corydoras, danios, barbs, gouramis.
FOOD: Tablets; live; Tubifex, mosquito larvae, brine shrimp.
SEX: Females are slightly plumper and have a clear dorsal fin while males have spots around their dorsal fin.
B: Breeding the Darter is fairly easy. A pair spawns on the bottom, laying side to side. The parents should be removed from the tank after the eggs are laid. The 150 eggs fall between rocks and hatch after 30 to 40 hours. The fry have very small mouths and should be raised on food tablets, infusoria, and Artemia.
BP: 5. Breeding is not difficult.
R: About 50 Characidium species have been described although distinguishing between them is very difficult because of the subtle differences. Color depends on what environment the fish is found. Fish with a greenish color are found in rivers with heavy vegetation, while dark bodied specimen are found in rivers with dark rocks.
DC: 3. A robust species, that is suitable for most community tanks.

Species Index | Fish Home | Rainforests



Recent news

New Yangtze River dam could doom more endangered species

(06/22/2009) Eight Chinese environmentalists and scientists have composed a letter warning that a new dam under consideration for the Yangtze River could lead to the extinction of several endangered species. The letter contends that Xiaonanhia Dam, which would be 30 kilometers upstream from the city of Chongqing, will negatively impact the river’s only fish reserve. Spanning 400 kilometers in the upper Yangtze, the reserve is home to 180 fish species, including the Endangered Chinese sturgeon, and the Critically Endangered Chinese paddlefish, as well as the finless porpoise.


Fish take less than a decade to evolve

(06/22/2009) Evolution is often thought of being a slow-process, taking thousands, if not millions, of years. However a new study in The American Naturalist found that Trinidadian guppies underwent evolution in just eight years, or thirty generations. Less than a decade ago Swanne Gordon, a graduate student at UC Riverside, and her team introduced Trinidadian guppies into the Damier River in the Caribbean island of Trinidad. They placed the guppies above a waterfall to allow them to flourish in a largely predator-free environment.


Madfish?: scientist warns that farmed fish could be a source of mad cow disease

(06/17/2009) In a paper that shows just how strange our modern world has become, Robert P. Friedland, neurologist from the University of Louisville, warns that farmed fish could be at risk of Creutzfeldt Jakob disease, or mad cow disease.


New report predicts dire consequences for every U.S. region from global warming

(06/17/2009) Government officials and scientists released a 196 page report detailing the impact of global warming on the U.S. yesterday. The study, commissioned in 2007 during the Bush Administration, found that every region of the U.S. faces large-scale consequences due to climate change, including higher temperatures, increased droughts, heavier rainfall, more severe weather, water shortages, rising sea levels, ecosystem stresses, loss of biodiversity, and economic impacts.


Will jellyfish take over the world?

(06/16/2009) It could be a plot of a (bad) science-fiction film: a man-made disaster creates spawns of millions upon millions of jellyfish which rapidly take over the ocean. Humans, starving for mahi-mahi and Chilean seabass, turn to jellyfish, which becomes the new tuna (after the tuna fishery has collapsed, of course). Fish sticks become jelly-sticks, and fish-and-chips becomes jelly-and-chips. The sci-fi film could end with the ominous image of a jellyfish evolving terrestrial limbs and pulling itself onto land—readying itself for a new conquest.


Marine scientist calls for abstaining from seafood to save oceans

(06/08/2009) In April marine scientist Jennifer Jacquet made the case on her blog Guilty Planet that people should abstain from eating seafood to help save life in the ocean. With fish populations collapsing worldwide and scientists sounding warnings that ocean ecosystems—as edible resources—have only decades left, it is perhaps surprising that Jacquet’s call to abstain from consuming seafood is a lone voice in the wilderness, but thus far few have called for seafood lovers to abstain.



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Copyright Rhett Butler 1994-2009

The copy for fish.mongabay.com was written in 1994-1995. Therefore some information such as scientific names may be out of date. For this, I apologize. Feel free to send corrections to me.