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Others
/ Knifefish / Ghost Knife Fish
Ghost Knife Fish, Black Ghost Knife Fish, Speckled Knife Fish
Apteronotus albifrons | Pictures
Synonyms:
Sternarchus albifrons; Sternarchus
maximiliani
Physical description: An elongated, laterally compressed species with a log anal fin.
The caudal penuncle is also long, and
the caudal fin is very small.
The entire fish is black, save for a white band at the caudal penuncle and another at the
base of the caudal fin.
Size/Length: To 19" (48 cm)
Similar species: None
Habitat: South America; widespread throughout the Amazon and Paraguay river in Brazil, Ecuador,
Guyana,
Peru
S: bottom, middle
Aquarium: A tank measuring 40" (152 cm) with a capacity of 45-55 gallons (170-210 L) is
sufficient for a medium-sized fish.
A significantly larger tank is need for adult size specimen-those over
12" (30 cm).
Provide many hiding places among rocks, wood, pipes, and tubes.
The tank should be dark, possibly with
a cover of floating plants.
The tank should have dense planting and a soft substrate.
Water chemistry: pH 6-7 (6.7); 4-12 dH (7); 75-82°F (24-28°C)
Social behavior: This timid species that is territorial and aggressive towards others of its own kind.
This
species can be kept with without problems with peaceful fish not large enough to swallow.
Be sure to provide retreats.
This
species should not be kept in pairs, although several fish can be kept in a large tank.
Suggested companions: Angelfish, Discus, Eartheaters, Acaras, Gouramis,
Leporinus ,
Anostomus, catfish
FOOD: Live; Tubifex
, crustaceans, earthworms, insect larvae; chopped meat; tablets
Sexual differences: Unknown
Breeding techniques: Unknown; although simulating the rainy season could serve to activate spawning.
Breeding potential: 10.
There are no reports of successful spawning in captivity.
Remarks:
This species may rest lying on its side.
Under favorable conditions, this fish can be
long lived.
Difficulty of care: 7.
This species is sensitive to water pollutants, changes in water conditions, and medications.
The
Black Ghost Knifefish requires a diet including live foods.
Recent articles about fish
Overfishing may hurt Amazon forest trees
(2/5/2008) Overfishing is reducing the effectiveness of seed dispersal by fish in the Brazilian Pantanal, reports Nature. The research suggests that fishing practices can affect forest health.
Scientists find fish that literally lives in trees
(10/17/2007) Scientists have found a fish that literally lives in trees, according to research published in The American Naturalist and highlighted in New Scientist Magazine.
Piranhas originated when Amazon was flooded by seawater
(12/4/2007) South America's piranha family of fish -- notorious as eaters of flesh -- can be traced back to a single ancestor which dispersed when the Amazon was flooded by seawater some five million years ago, report researchers from the Institut de Recherche Pour le Developpement (IRD). Today piranhas are exclusively freshwater fish found from the Orinoco River basin in Venezuela to the Parana in Argentina.
How to save the world's oceans from overfishing
(7/8/2007) Global fishing stocks are in trouble. After expanding from 18 millions tons in 1950 to around 94 million tons in 2000, annual world fish catch has leveled off and may even be declining. Scientists estimate that the number of large predatory fish in the oceans has fallen by 90 percent since the 1950s, while about one-quarter of the world's fisheries are overexploited, depleted, or recovering from depletion. Despite these dire trends, the situation is changing. Today some of the world's largest environmental groups are focused on addressing the health of marine life and oceans, while sustainable fisheries management is at the top of the agenda for intergovenmental bodies. At the forefront of these efforts is Mike Sutton, director of the Monterey Bay Aquarium's conservation program: the Center for the Future of the Oceans. The aquarium, which has long been recognized as one of the world's most important marine research facilities, is pioneering new strategies for protecting the planet's oceans. Sutton says the approach has four parts: establishing new marine protected areas, pushing for ocean policy reform, promoting sustainable seafood, and protecting wildlife and marine ecosystems.
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