he slight upturned
snout of this 'pim' (hence the common name of Sturgeon catfish)
makes it possible for it to find the finest food organisms in
the substrate. It is reported that some imported specimens are
half starved and need tender loving care to recover.
Some of these specimens end up with a deformed snout which has
either been damaged in transit or in captivity.
If this species is not given enough space
it will invariably damage its snout against the aquarium glass
sides so they must be given as large a tank as possible.
Below is an image of a specimen with a
deformed snout. Water conditions must of course be of the highest
quality when dealing with this species as they will not tolerate
ammonia or nitrites so very good filtration is in order if thinking
about purchasing the Sturgeon catfish.
with damaged snout due to either in transit or in captivity.
Platystomatichthys sturio is monotypic (the only species
in this genera) and is closely related to the Duckbill Catfish,
Sorobim lima and as
such has similar looking lateral plates beginning just behind
the head and extending back to around the position of the ventral
fins. These plates are covered with skin similar to S. lima.
is classified under the "Calophysus-Pimelodus clade".
Within this clade, it is considered a part of the "Pimelodus-group"
of Pimelodids, which also includes Pimelodus, Exallodontus,
Duopalatinus, Cheirocerus, Iheringichthys,
Bergiaria, Bagropsis, Parapimelodus,
Platysilurus, and Propimelodus.
Body slender and long, covered with thin
skin. Head long, depressed anterioly, the upper jaw projecting
well beyond the lower jaw, the exposed underside of which is covered
with fine rasp-like teeth. Three pairs of barbels, two pairs of
moderately short mandibular barbels and one pair of extremely
long maxillary barbels which well exceed the length of the body.
Caudal fin deeply forked, with the outer rays of the upper and
lower lobes extended into long filaments.
Sides silvery grey, shading darker dorsally
and to creamy white on the ventral surface. A series of large
round black spots along the side, varying in number between individuals,
though usually one spot below the middle of the dorsal fin and
another at the base of the upper lobe of the caudal fin are present.
Can be kept together or singly but will
be predatory to smaller fishes especially as they grow larger.
If housing with other fish the large cichlids of South America
or large cyprinids such as tinfoil barbs will do well.
|Provide a soft substrate
such as sand or smooth gravel as they will dig and root
and will need a powerful external filter. The tank must
be twice the length, in width, of the barbels on this species,
so it can turn around with no obstruction. A 4ft tank should
be the minimum length. Provide a swift current in the tank
for this species.
Tubifex, small earthworms, tablet and pellet
Greek, platys = flat + Greek, stoma = mouth + Greek, ichthys
barbels: Pertaining to the upper jaw. (maxillary
Pertaining to the lower jaw. (mandibular barbels).
Ventral fins: The
paired fins, between the pectorals and the anal fins.
primary rayed fin(s) on top of the body
and R. Riehl 1985
Aquarien atlas. Band 2. Mergus, Verlag für Natur- und
Heimtierkunde GmbH, Melle, Germany. 1216 p.
Conservación Internacional; seris
de Guías Tropicales De Campo. Pecos del medio Amazonas
Región de Leticia. 546 p.
Lundberg, John G.; Parisi, Béatrice M.
(2002). "Propimelodus, new genus, and redescription
of Pimelodus eigenmanni Van der Stigchel 1946, a long-recognized
yet poorly-known South American catfish (Pimelodidae: Siluriformes)"
(PDF). Proceedings of the Academy of Natural Sciences of
Philadelphia 152 (1): 75–88. doi:10.1635/0097-3157(2002)152[0075:PNGARO]2.0.CO;2.
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