|Cat-eLog Data Sheet|
|Scientific Name||Synodontis robbianus Smith, 1875|
|Common Name||Russet Synodontis|
|Type Locality||Old Calabar and lower Niger River, West Africa.|
|Pronunciation||sin oh don tiss|
|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. Named after Reverend Alexander Robb, a Scottish missionary in Old Calabar [= Nigeria]. It uses an older way to form a patronym, using the ending -us (as opposed to -i) to indicate the name honours that of a male person.|
|Size||138mm or 5.4" 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.|
|Sexing||First lay the fish in your hand with its head toward your palm and the tail toward your fingers. Hold the dorsal spine between your middle and ring finger so the fish is belly up and you won't get punctured by the sharp fin spines (which hurts - be careful). The genital pore is in a small furrow of tissue (in healthy fish) and will be obstructed by the pelvic fins. Pull down on the tail gently to arch the fishes spine and the pelvic fins will stand and the furrow open to display the genital pore and the anus of the fish. The male has a somewhat ridged genital papillae on which the spermatoduct is on the back side, facing the tail fin. A gravid female will also show an extended papillae but the oviduct is on the ventral side of the papillae. It may also show a little redness if really gravid. A thin or emaciated female will have just two pink pores, the oviduct and the anus.|
|Distribution||Africa: Lower Niger and Cross River (Old Calabar) in Nigeria.
African Waters, Nigeria Waters, Niger, Lower Niger (click on these areas to find other species found there)
African Waters, Cross (click on these areas to find other species found there)
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|IUCN Red List Category||Data Deficient, range map and more is available on the IUCN species page. Last assessed 2019.|
|pH||6.0 - 7.8|
|Temperature||21.0-24.0°C or 69.8-75.2°F (Show species within this range)|
|Other Parameters||dH 10-25.|
|Breeding Reports||There is no breeding report.|
|Reference||Proceedings of the Royal Physical Society of Edinburgh. v. 8, pp 92, Fig. 1.|
|Registered Keepers||Keeping this species? Why not .
There are 8 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 7 records of this fish being seen, view them all.
|More on Synodontis robbianus|
|Look up Synodontis robbianus on AquaticRepublic.com|
|Look up Synodontis robbianus on Fishbase|
|Look up Synodontis robbianus on Encyclopedia of Life|
|Look up Synodontis robbianus on Global Biodiversity Information Facility|
|LFS label creator.|
|Last Update||2020 Sep 23 03:21 (species record created: 2001 May 04 00:00)|