|Cat-eLog Data Sheet|
|Scientific Name||Synodontis nigriventris David, 1936|
|Common Names||Upside Down Catfish
Rückenschwimmender Kongowels (Germany), Sortbuget Rygsvømmermalle (Denmark), Vändmal (Sweden)
|Type Locality||Buta, Democratic Republic of Congo.|
|Pronunciation||sin oh don tiss - nig ree VENT riss|
|Etymology||According to Cuvier, Synodontis is an "ancient name for an undetermined fish from the Nile". It is apparently not derived, as often reported, from syn-, together and odous, tooth, presumed etymology of the lizardfish genus Synodus and in reference to the closely-spaced lower jaw teeth of both genera. nigri mean dark, ventris meaning belly. Alluding to the reversed counter-shading.|
- CotM 1999 April
|Size||100mm or 3.9" SL. Find near, nearer or same sized spp.|
|Identification||All species in the genus Synodontis have a hardened head cap that has attached a process (humeral process) which is situated behind the gill opening and pointed towards the posterior. The dorsal fin and pectoral fins have a hardened first ray which is serrated. Caudal fin is always forked. There is one pair of maxillary barbels, sometimes having membranes and occasionally branched. The two pairs of mandibular barbels are often branched and can have nodes attached. The cone-shaped teeth in the upper jaw are short. S-shaped and movable in the lower jaw. These fish produce audible sounds when disturbed rubbing the base of the pectoral spine against the pectoral girdle.
A common import; although occasionally confused with the similar S. contracta which has a larger head and much larger eyes.
|Sexing||Female is larger, plumper and with old age more pale.|
|Distribution||Africa: Democratic Republic of the Congo.
African Waters, Congo, Middle Congo (click on these areas to find other species found there)
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|IUCN Red List Status||Least Concern|
|pH||6.0 - 7.5|
|Temperature||22.0-28.0°C or 71.6-82.4°F (Show species within this range)|
|Feeding||Will eat the vast majority of prepared and live foods.|
|Furniture||Over hanging structures or tunnels - either rock, wood or large broad leafed plants. These are all to provide shady places of rest while upside down. Choice of substrate is unimportant.|
|Compatibility||An ideal catfish for the smaller aquarium. Peaceful with both its conspecifics and other residents. To get the best out of this fish it should be kept in small shoals as you would keep Corydoras.|
|Suggested Tankmates||Any small to medium sized community fish.|
|Breeding||In the North American Catfish Society Vol. 1 No. 1 Jan. 1996 there appeared an article entitled ''Luck In A Bucket'' by Jay and Mary Ann Angros. The authors keep some of their fishes outdoors in the summer. The catfish were placed in a five gallon bucket full of clay pots and PVC pipe from their regular tank. One author, Jay, took the bucket outside and promptly forgot about it for two days! When the bucket of fish was remembered and checked, the authors found fifty eggs in one piece of PVC. The fish were then brought back inside and placed in a tank that was completely full of crockery and PVC pipes. Sometime later this tank was broken down for cleaning and seven S. nigriventris fry were found. The spawning tank had pH 6.8 and the temperature fluctuated between 78F and 82F. The tank had about an inch of gravel over an under gravel filter. Tankmates included skunk Botia and other Synodontis spp. The fish were fed mainly frozen brine shrimp, bloodworm, and ProGreen (a mixture of green, clams, and shrimp). Based on the account above, it would seem that any attempt at spawning the USD Catfish requires, at a minimum, the following:
A well-rounded high quality diet
Drastic temperature drops to initiate spawning
Soft acidic water
Suitable spawning sites
|Breeding Reports||There is but a single breeding report, read it here.|
|References||Revue de Zoologie et de Botanique Africaines v. 28 (no. 3), pp 417.|
|Registered Keepers||Keeping this species? Why not .
There are 183 registered keepers, view all "my cats" data.
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There is no wish to keep this species.
|Spotters||Spotted this species somewhere? Click the binoculars!
There are 17 records of this fish being seen, view them all.
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|Last Update||2019 Sep 17 14:46 (species record created: 2001 Apr 21 00:00)|