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Catfish
/ Pimelodidae / Reticulated Pimelodid
Reticulated Pimelodid
Perrunichthys perruno | Pictures
Synonyms: None
Physical description:
An elongated catfish with a heavily forked tail. The dorsal fin stands tall when erect. A long pair of barbels extends from the upper jaw and two smaller pairs are located on the lower jaw. The body color is made up of dark brown, round splotches with thin, light brown markings between. The flanks have the same pattern.
Size/Length: To 24" (60 cm)
Similar species: The False Perrunichthys (
Leiarius marmoratus) is very similar, but
easily distinguishable by its lesser amount of dorsal rays and rounded head.
Habitat: South America; tributaries of, and in the Rio Negro (Southern Venezuela and Brazil).
S: bottom
Aquarium: 72" (183 cm) or 100 or more gallons (378 L).
Leave large open swimming areas.
Use
a powerful filter that provides a moderate current and is able to handle the waste of this fish.
Provide large rock shelters and caves
that will not collapse when bumped by this catfish.
If plants are used, they should be large, robust, and well-rooted ones.
Use
a cover of floating plants to diffuse the lighting.
Water chemistry: pH 5.8-7.5 (6.5), 1-15 dH (7), 72-79°F (22-26°C)
Social behavior: A large, nocturnal predator that will eat any swallow able tank mates.
Combine
with larger fish.
Suggested companions: Large cichlids, large characins, Arawana, large loricarids
FOOD: Live; fish, earthworms, crabs; occasionally tablets; chopped meat.
Like other large, predatory catfish,
once mature, this fish should be fed only two or three times a week.
SEX: Unknown-possibly males are more slender than females.
Breeding techniques: Unknown
Breeding potential: 10. Spawning has not been recorded in captivity.
Remarks: Frequent water changes are necessary because of the large volume of waste this fish will produce. This fish can attain a length of over 12" (30 cm) in its first year.
Difficulty of care:
7.
A large, predatory catfish that must be fed 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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