Physical description: An elongated, laterally compressed species. The Blunt-Jaw Elephantnose's mouth is located near the end of its large proboscis. The lower part of the proboscis protrudes past the mouth. The dorsal and ventral profiles are symmetric with the anal and dorsal fins being located across from one another. The caudal fin is forked. The coloration is brown-gray with several brownish-white markings. Size/Length: To 16" (40 cm) Similar species: Other Gnathonemus and Campylomormyrus species. Habitat: In murky water with submerged wood in Western Africa ; Niger and Zaire. S: bottom Aquarium: A tank measuring 48" (122 cm) with a capacity from 55 gallons (209 L) is sufficient for fish to 10" (25 cm) in length. Larger fish require larger tanks. Use dim lighting and provide hiding places with pipes, tubes, caves, and wood. The tank should be well-planted with large, robust plants and have a cover of floating plants. Use a filter that provides a strong current. Use a fine gravel or sand substrate, for this fish burrows. The Worm-jawed Mormyrid prefers large, shallow tank having peat filtration. Water chemistry: pH 6.0-7.5 (6.8); 5-20 dH (6); 73-82°F (23-28°C) Social behavior: A species that is territorial and aggressive towards similar species although peaceful towards different large species. Do not combine with small species. Suggested companions: Haplochromis, Synodontis, Cichlasoma, Tilapia, Pimelodids, Doradids, Loricarids, African characins. FOOD: Live; Tubifex , small fish, worms, insect larvae Sexual differences: The rear edge of the anal fin of males is curved, while the edge of females is straight. Breeding techniques: Unknown Breeding potential: 10. This species has not been bred in captivity. REMARKS: This species requires frequent partial water changes. Difficulty of care: 7. The Worm-jawed Mormyrid is a fairly difficult species to care for. It requires live foods and is aggressive. It is sensitive to medications and unfavorable water conditions. 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. |
