Catfish of the Month Right May 2002

Pimelodus ornatus
Ornate Pimelodus, Schmuckantennenwels (Germany), Smykkemalle (Denmark) - Pimelodus ornatus   Kner, 1858

Article © Julian Dignall, uploaded May 01, 2002.

Pimelodus ornatus is an old friend of mine. One of the first dream catfish I hunted for in my local fish shops (LFS), and one, today, I still greatly enjoy encountering. I think I am not alone in this regard. The image above was taken at an export station in Peru, the one below in a far eastern LFS; testimony to its enduring, and worldwide, appeal.

The popularity, or at least, desirability of this fish stems from its bold colouration. As with many catfish this reclusive fish is rarely seen during the day in all its glory; however it does have the distinct plus point of maintaining its characteristic pattern into old age. Many catfish lose colouration with time but this species does not.

To the catfish fan young specimens are, simply, downright cute. They exhibit the puppy-dog appeal of an inquisitive youngster that's all floppy ears and disproportionately oversized paws (or, at least, the catfish equivalent of whiskers and fins).

With age the fish attains an impressive size yet, more significantly, does not become unmanageable. This affords the aquarist the opportunity to keep a group of animals in surroundings that would cramp or even kill larger members of this family. Why keep a stunted tiger shovelnose when you can have a shoal of these guys with some room to spare? In addition, we know little of the social behavior of the medium sized pims and will only learn more when someone starts keeping them in groups.

Cosmetically, the fish is appealing. Its gun-metal grey, large, sloped head is adorned by two large, deep blue eyes. Young fish display a pearly sheen to their fins, adults a more golden yellow. The dorsal and mid-body markings are bold and pleasing to the eye as the fish streaks past. Watching groups of these sleek fish gives a strange impression, a mixture of elegance and speed one might easily associate with marine sharks - but without the malice. Perhaps malice seems absent because of the fishes quizzical, almost comic, expression. The characteristic antennae-like barbels common to many members of this family also soften its appearance. Often the shorter, downward pointing barbels give the impression of a single hand wandering along the substrate, feeling its way with sensitive fingers.

A great catfish to have in your tank then? Great unless you are a small fish that is. If this catfish has a downside it is that its all pimelodid and, as such, will eat other fish given even half a chance. All Pimelodus spp. have surprisingly large mouths; certainly anything less than a third of the size of these fish is in danger. Take this and the fishes reasonably swift growth rate into account when planning ahead on co-inhabitants for this species; they should be at least half the size of the pim at all times and have roughly equal growth rates.

Don't be put off by a price that you'd gladly pay for a pleco with the same colouration, this "king pim" is as well worthy of your pounds (dollars, yen etc.) as any other.

Copyright information for the images used in this article can be found on the species' full Cat-eLog page.

Down Cat-eLog Data Sheet
Scientific Name Pimelodus ornatus  Kner, 1858
Common Names Ornate Pimelodus
Schmuckantennenwels (Germany), Smykkemalle (Denmark)
Type Locality Suriname; Rio Negro and Cuiabá, Brazil.
Synonym(s) Megalonema rhabdostigma
Pronunciation pim ee LOW duss - or NAT uss
Etymology (Greek)Pimele=Fat + (Greek)odous=teeth. 
Article Link - Shane's World Right Species Right Pimelodus ornatus: A piece of jewellery in the aquarium
Down Species Information
Size 385mm or 15.2" SL. Find near, nearer or same sized spp.
Identification A real show fish and a distinctive member of the genus making it difficult to confuse with others. Has a larger head than most other Pimelodus.
Sexing Not known.
Down Habitat Information
Distribution South America: Amazon, Corintijns, Essequibo, Orinoco, and Paraná River basins. Also in major rivers of the Guianas.
Guyana Waters, Coastal Rivers of Guyanas, Essequibo (click on these areas to find other species found there)
Guyana Waters, Coastal Rivers of Guyanas, Suriname Coastal Rivers, Corintijns (click on these areas to find other species found there)
Amazon (click on these areas to find other species found there)
Orinoco (click on these areas to find other species found there)
La Plata, Paraná (click on these areas to find other species found there)
Guyana Waters, Coastal Rivers of Guyanas, Essequibo, Rupununi (click on these areas to find other species found there)

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IUCN Red List Category Least Concern, range map and more is available on the IUCN species page. Last assessed 2020.
pH 6.0 - 7.2
Temperature 24.0-25.0°C or 75.2-77°F (Show species within this range)
Down Husbandry Information
Feeding An unfussy omnivore. Most prepared foods are taken and the fish will happily gorge itself on live or frozen foods. Bloodworm induces a feeding frenzy and is good for acclimatizing new, smaller acquisitions. The fish will eat huge amounts in one day, its belly swelling to resemble a marble and can comfortably live off this for up to a week. User data.
Furniture These fish will be considerably more active if given lots of cover at the sides of the aquarium that they can dart into when spooked. Floating plants are also a good idea as water current is unimportant.
Suggested Tankmates Larger active fish such as tetras, most barbs and gouramis. They can also be kept in groups but do not suffer from being kept singly. Angelfish and other ''graceful'' fish are sometimes bothered by this species' barbels particularly during ''lights-out''.
Breeding Reports There is no breeding report.
Down Further Information
Reference Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 26 (s. 373), pp 411 [41], Pl. 6 (fig. 18).
Registered Keepers There are 31 registered keepers, view all "my cats" data.
Wishlists Love this species? Click the heart to add it to your wish list.
There are 3 wishes to keep this species, see who wants what.
Spotters Spotted this species somewhere? Click the binoculars!
There are 13 records of this fish being seen, view them all.
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Last Update 2020 Sep 19 01:41 (species record created: 2002 May 01 11:22)

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