Common in both lower and headwater sections of tributary
streams. They prefer larger pools and deep water within
tributary streams associated with cobble and boulder
habitat. As juveniles they probably prefer cobble
regions, but as they mature they are found in a wide
variety of habitats preferring complex structure especially
deep cobble and boulder areas. In the type locality
of the Jan Dissles River near Clanwilliam and also
the Olifants system in the Western Cape, they seem
to like deeper runs and pools and they were widespread
in the main river channels before bass were introduced.
Aquarium Care: I have kept all three
species in aquaria – all quite difficult to
maintain in good condition. Best results were with
A. barnardi – I had them in a recirculating
circular tank. Packed peat into the filter and pushed
the pH right down(Roger Bills). Diet:
Fed them on worms mostly although I assume they generally
eat chironomids, mayflies and caddis mostly in the
wild. They were very aggressive with each other and
seemed to maintain territories (Roger Bills). Remarks:
This species is critically endangered and uncommon
due to their habitats being threatened by stream channeling,
water extraction, sedimentation and introduced bass.
This species will never be imported to our aquariums
due to the above limitations.
Clanwilliam Rock Catfish
Clanwilliam-Olifants River system. Type locality:
Olifants River system, Clanwilliam Division: in an
irrigation furrow on the Jan Diesels River in Bosch
Kloof, Clanwilliam; Boontjes River, Citrusdal; upper
reaches of Olifants River at the farm “Keerom”
and in a side tributary of the farm “Noordhoek.”
12.7cm (5ins) SL.
1993. A complete guide to the freshwater fishes of
southern Africa. Southern Book Publishers. 388 p. Froese, R. and D. Pauly. Editors.
2011. FishBase. World Wide Web electronic publication.
www.fishbase.org, version. Ferraris, C.J. Jr., 2007. Checklist
of catfishes, recent and fossil (Osteichthyes: Siluriformes),
and catalogue of siluriform primary types. Zootaxa
1418:1-628. Swartz, E., Bills, R. & Impson, D.
2007. Austroglanis gilli. In: IUCN 2013. IUCN Red
List of Threatened Species. Version 2013.2. Bills R. (pers comm).