Amur Catfish, Tawny Dragon Catfish, Yellow catfish - Tachysurus fulvidraco (Richardson, 1846)
by Heok Hee Ng, uploaded October 01, 2003
One usually associates temperate catfish with either the North American ictalurids or the Eurasian wels (Silurus). But there are more to temperate catfishes than just these two groups. An often-overlooked group is the east Asian bagrids, some of which (including the subject of this month’s article) are found as far north as the frozen wastes of Siberia. This often comes as a surprise to most people, since one usually associate bagrid catfishes with the warmer climes of tropical Asia and Africa. The tawny dragon (this evocative name comes from the specific epithet, which comes from the Latin fulvus, meaning tawny, and draco, meaning dragon) is one such bagrid widespread throughout subtropical and temperate Asia.
It is usually difficult to distinguish between Pseudobagrus and Pelteobagrus, and some species have been bounced around from one genus to another over the years. As a general rule of thumb, species with a forked caudal fin are generally assigned to Pelteobagrus and those with an emarginate / truncate caudal fin are assigned to Pseudobagrus.
Like most bagrids, the tawny dragon is a fairly peaceful species that is not too particular about what it eats. It is tolerant of a wide variety of water conditions, and can even be maintained in a warmer, tropical setup. In short, an ideal community catfish were it not for its size. Although somewhat shy and retiring at times, the tawny dragon can be easily coaxed out of hiding at feeding time on the account of its greed. Like other bagrids, conspecifics tend to be territorial but the size of the tank needed to comfortably house more than one fish usually precludes the possibility of having more than one fish in the tank.
Although fairly common imports in the aquarium trade a few years ago, the tawny dragon is hardly encountered of late. If properly accommodated, the tawny dragon is a welcome addition to the cold water tank and certainly a lot more colourful than its western temperate brethren.
Thanks again to Heok ee Ng for this month's featured catfish and here's hoping its frequency of import does increase in the near future.
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|Cat-eLog Data Sheet|
|Scientific Name||Tachysurus fulvidraco (Richardson, 1846)|
|Common Name(s)||Amur Catfish, Tawny Dragon Catfish, Yellow catfish|
|Type Locality||Canton, China.|
|Synonym(s)||Bagrus calvarius, Macrones fulvidraco, Pelteobagrus fulvidraco, Pimelodus fulvidraco, Pseudobagrus fulvidraco, Silurus calvarius|
|Pronunciation||full vih DRAY ko|
|Etymology||The specific epithet is from ''fulva'', tawny, and ''draco'', dragon.|
|Size||345mm (13.6") SL. Find near, nearer or same sized spp.|
|Identification||Tachysurus can be identified by an extrascapular without a laterosensory canal, and a pterotic with a broad lateral laminar expansion. It is among the most speciose catfish groups in East Asia and its members inhabit habitats ranging from fast-flowing hillstreams to large rivers.
Yellow back, yellowish white belly, large and dark brown speckles on sides. Elongated body. Strong spines on pectoral fins with anterior and posterior serrations. Dorsal fin origin much before ventral fin origin. Has an adipose fin. Caudal fin deeply forked.
Is an important food fish in China and Korea. Soup made by simmering the fish with herbs and spices is considered to be a medicinal tonic in China.
Nowadays rarely seen in the hobby (at least in North America and Europe).
|Sexing||Adult males are larger than females.|
|Distribution||Nam Ma basin (Laos) and Viet Nam to south-eastern Siberia.
Ma (click on these areas to find other species found there)
Vietnam waters (click on these areas to find other species found there) (Click the map-icon to show/hide map of species distribution)
|pH||6.0 - 7.6|
|Temperature||16.0-25.0°C or 60.8-77°F (Show others within this range)|
|Other Parameters||A hardy fish that can live in a wide variety of conditions. This is a cold water fish, so heating is not necessary. Can be successfully maintained in outdoor ponds, assuming climate isn\'t too hot or cold.|
|Feeding||In nature, feeds at the bottom on insects (particularly on trichopterans and chironomids), mollusks and occasionally fishes. Not a fussy feeder in captivity.|
|Furniture||Inhabits streams and lakes with muddy and sandy bottoms. Best maintained in an aquarium of 55 gallons or larger. Provide ample hiding places.|
|Compatibility||Generally a peaceful, solitary fish. Should not be kept with small, slow-moving tank mates, as they may be eaten. As a temperate species, you might be tempted to keep it with goldfish. This is not a good idea, slower moving fish will have fins nipped and scales eaten. Fancy goldfish will fare even worse.|
|Suggested Tankmates||Larger cold water cyprinids such as carp, given its propensity for eating smaller tankmates.|
|Breeding||In Nature, spawning occurs in summer. Males have been reported to guard both the eggs and larvae in the nest hole, previously dug by the male in the clay bottom. Fry typically hatch in two days. Commercially bred in ponds.|
|References||Rep. Brit. Assoc. Adv. Sci.15th meeting  - pp286|
|Registered Keepers||(1) Dave Rinaldo, (2) Jools (k: 2), who also notes: "Fin nippers!", (3) Silurus, (4) diburning, (5) vriesea, who also notes: "Bought as "Devil Cat" sold in January.", (6) RobDoran1, (7) yellowcat, who also notes: "Interesting sexual dimorphism, now fully grown, the female is only 5" long, the males were 12" long but have been sold. All were acquired same time @ 1 1/2"...", (8) straitjacketstar, (9) miles44 (k: 2), (10) pickles4601, (11) Skirge (p: 2), (12) mi-tatsu, (13) Birger, (14) arapaimag, (15) amiidae.
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|Last Update||2008 Mar 01 05:29 (species record created: 2001 May 03 00:00)|
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