he first month of 2012 heralds us a look at a member of the
Doradidae family "The Fog Doradid". This is one of
the nicest looking dorad cats around and is conspicuous by its
long snout and banded body pattern.
Provide a good sized tank that will
be 4ft (120cm) or above as they can be a quick growing catfish.
A soft substrate such as sand will be better as sharp gravel
can be detrimental to the fishes barbels and its health. Prefers
the water to be on the soft side. Provide plenty of cover for
them in the shape of pipework and caves as they are a very nocturnal
catfish. You can also have hardy plants in the tank
Above is the view of the head showing
the Humeral process extending to
the last one-fourth of the pectoral fin. and the short maxillary
barbels. It is prone to leaning on to aquarium heaters so covering
them would be a good idea.
Where their was only this species in
the genera (monotypic) there are now a further 4 species named;
Rhinodoras armbrusteri Sabaj Pérez, 2008, Rhinodoras
boehlkei Glodek, Whitmire & Orcés V., 1976,
Rhinodoras gallagheri Sabaj Pérez, Taphorn &
Castillo G., 2008 and Rhinodoras thomersoni Taphorn
& Lilyestrom, 1984.
Fishbase has this species size as 50cm.
TL and other publications at 17.5cm. SL so there is a discrepancy
on the adult size of this dorad.
Head as long as it is wide or slightly
longer. Fontanel is continued as an obscure groove to the dorsal
fin. Eyes moderate and located in the middle of head. Preorbital
plates are obscure. Maxillary barbels not extending as far as
the gill openings. Humeral process extends to the last one-fourth
of the pectoral fin. The adipose fin is prolonged forward as
a keel. The dorsal fin is strongly serrate, the serrae stronger
on the posterior margin and directed downward. The lateral scutes
which number about 29-30 are low and the caudal peduncle is
covered with modified fulcra above and below. Caudal fin is
Variable ranging from near completely black
or brown body bands according to the substrate. Dark spots to
the dorsal and caudal fins.
This species of Dorad is like most of
this family, very peaceful, but as adults can prey on very small
fish or fry on the substrate at night so it is better to house
with species that cannot be eaten.
As they can be very
nocturnal they can be be best fed at lights out with tablet
foods and frozen foods such as bloodworms. If left to their
own devices they will actively seek out food remains during
Greek, rhinos = nose + Greek,
dora = skin
Images: © Danny
Blundell @ The Danny Blundell Photo Gallery
H.A. and R. Riehl 1985
Aquarien atlas. Band 2. Mergus, Verlag für Natur-
und Heimtierkunde GmbH, Melle, Germany. 1216 p.
Burgess, W.E. 1989 An atlas of freshwater
and marine catfishes. A preliminary survey of the Siluriformes.
T.F.H. Publications, Inc., Neptune City, New Jersey (USA).
The paired fins after head and before anal fin.
Caudal fin: The
Caudal peduncle: The area between the
dorsal fin and the tail.
Adipose fin: Fleshy finlike projection
without rays, behind the rayed dorsal fin.
Serrae : Saw-like
notches along an edge.
Maxillary barbels: Pertaining to the
upper jaw. (maxillary barbels)
Humeral process: Bony extension of the
Scutes: Bony covering.
Fontanel: The space(s) between the bones
on top of the skull covered by skin.
Preorbital: The first and usually the
largest of the suborbital bones; located along the ventro-anterior
rim of the eye. Sometimes called the lacrimal bone; the
bone or region before and below the eye.