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. |
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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. |
