moolenburghae Weber & de Beaufort, 1913
his month we welcome
back Asian catfish expert Adrian Taylor to pen a piece
for us on one of the so called "Glass catfishes",
one of the smaller 'Schilbeidae' that can now be found
quite often in our local fish stores. Like Kryptopterus
the Siluridae family it is an unassuming and inconspicuous
catfish that can often go unnoticed. When these are
at their best the body takes on an iridescent blue,
nearly turquoise shine, (see image above) that at
times when the fish are swimming and swiftly turning
around in search of food can be quite scintillating
to the viewer.
is an active mid water swimmer and as such an aquarium
with plenty of open spaces and planted areas at its
margins into which they can retire in amongst during
the night time hours, would go someway in making these
small catfish feel secure. Tank mates should be chosen
that are not too boisterous and are of similar or
smaller in size. Fish such as Rasbora volcanus,
Rasbora espei and Brachydanio kerri and
bottom feeding catfishes such as Hara minuscula
and Akysis maculipinnis would make ideal
tank companions. Feeding; especially live food can
be can be a little captivating due to the fact that
when they are searching for food P. moolenburghi
spreads wide its four pairs of barbels in such
a way that it resembles an erect umbrella that has
lost all of its cloth, and any food that the barbels
comes into contact with is then very swiftly singled
out and consumed.
Sumatra, Batang Hari
Although the range
of the genus Pseudeutropius is quite large,
with the few species so far documented being found
in India, down across Myanmar and Thailand and into
the Greater Sunda Islands of Indonesia, it has been
a genus that has not as yet been thoroughly documented
or researched. For a while it was reported that a
population of P. moolenburghae existed in
the peat swamps of Peninsular Thailand; however, in
2011 HH Ng & Vidathayanon examined this 'population'
and although there were quite a lot of similarities
between the two populations, they diagnosed that amongst
other subtle differences the anal fin in the Thailand
population contained fewer rays 37 to 41 rays compared
to 42 to 49 rays in the Sumatra and Indonesian population's.
Due to these differences,
it has been accepted that the Thailand population
is a species in its own right, and is now described
indigens (HH Ng &
This species has now been assigned to the Horabagridae
Silver Glass Cat
Batang Hari River, Kapuas River, Sumatra.
Type locality: Sumatra, Batang Hari river,
Long anal fin; 42
to 49 rays. Head depresed, Large eyes. Small adipose
When these are at their best
the body takes on an iridescent blue, nearly turquoise
shine but can have the normal body colour of a pale
brown with a dark brown thick lateral stripe. There
is another stripe at the insertion of the anal fin
which runs the full length of the fin. The body is
Care & Compatibility
Quite a shy fish so would need
a planted tank to make them feel safe in their surroundings.
Have at least 6 to form a group.
There are no proven
external sexual differences.
Feeds on insect larvae and
small invertebrates in their natural habitats. In
the aquarium feeding is un-problamatic as this is
a catfish that readily accepts commercial foods such
as crushed flake and small pellets along with frozen
foods such as bloodworms, daphnia and brineshrimp.
Live foods such as daphnia, brine shrimp and mosquito
larvae should be fed at least once a week if one wants
to keep them in tip-top condition.
Fleshy finlike projection without rays, behind the rayed
dorsal fin. Anal fin: The median, unpaired, ventrally
located fin that lies behind the anus, usually on the
posterior half of the fish. Barbels:
Whisker-like structure on the heads of most catfish.
Greek, pseudes = false + Greek, eu = well + keel,
in reference to the compressed body of the fish.