The differences between the Panaqolus and
the Panaque genera is that the latter has
an oval shaped mouth and the jaws have very large
spatulate teeth with a single cusp, arranged in a
v form and Panaqolus have a small number
of spatulate teeth and are also a smaller genus. Panaque
schaeferi is diagnosed from all other P.
(Panaque) by having body colour consisting
of distinctly dark or faded black spots distributed
evenly on pale gray to brown base colour (vs. body
colour uniformly dark gray to brown or with alternating
dark and light gray, brown, or black longitudinal
stripes), and by having a maximum adult body size
of approximately 600 mm SL (vs. no greater than approximately
400 mm SL); from all but P.
by having pelvic-fin spine terminating at posterior
insertion of anal fin (vs. posterior or anterior to
posterior insertion of anal fin); from P. armbrusteri,
P. cochliodon, and P. suttonorum by
pectoral-fin spine terminating coequally with anus
(vs approximately halfway between pelvic-fin base
and anus); from P.
having brown to grey eyes in live specimens (vs. blue
or bluish eyes in live specimens), and by juveniles
up to approximately 129mm SL having a hyaline, anterior
caudal-fin window (vs. caudal fin uniformly opaque).
Aquarium Care: Bare in mind that this fish
will produce a lot of waste due to its diet so will
need a large external filter which will turn the tank
contents around about six times in the hour and give
it a good water flow. A fully grown individual would
need a 7ft (210cm) tank or over for it to function
properly. You will need driftwood or similar as this
catfish likes to chew on it and its long stage survival
depends on this. It will tend to hide during the day
and come out at night and actively search out food.
Diet: All Panaque (Panaqolus)
are wood eaters so would need this in an aquarium
set-up. Feed also vegetable foods such as cucumber,
courgette (zucchini) and sinking tablets. Feeding
information from image contributor, Andy Watson, "It
loves courgette and catfish pellets and is very bold,
always out looking for food and not shy at all".
See further information from the reference, Lujan
Peru, Ucayali drainage to Colombia, (Leticia). Type
Locality: Peru, Ucayali Department, Padre
Abad Province, Aguaytia River drainage, Santa Ana
River, Cordillera Azul National Park, 8u299510S, 75u339360W,
250 m elevation.
Seidel, I. 2008.
Back to Nature guide to L-catfishes, Ettlingen, Germany
208 p. Lujan, NK, M Hidalgo & DJ Stewart,
2010. Revision of Panaque (Panaque), with descriptions
of three new species from the Amazon basin (Siluriformes,
Loricariidae). Copeai 2010: 676–704.