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",
is one of the smaller 'Schilbeidae' that can now be found quite
often in our local fish stores. Like Kryptopterus
vitreolus from 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
Sumatra, Batang Hari river, Indonesia.
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
as Pseudeutropius indigens (HH Ng & Vidthayanon,
Remarks: This species has now been assigned to the Horabagridae
Long anal fin; 42 to 49 rays. Head
depresed, Large eyes. Small adipose fin.
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 virtually transparent
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.
Oviparous, eggs are unguarded
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.
Greek, pseudes = false + Greek, eu = well + keel, in reference
to the compressed body of the fish
and D. Pauly. Editors.
2009.FishBase. World Wide Web electronic publication. www.fishbase.org,
Ferraris, C.J. Jr., 2007. Checklist of
catfishes, recent and fossil (Osteichthyes: Siluriformes),
and catalogue of siluriform primary types. Zootaxa 1418:1-628
Taylor; A. Asian
Catfish.com. Factsheet. http://www.asiancatfish.com/page38/page60/page60.html
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fin: The median, unpaired, ventrally located fin
that lies behind the anus, usually on the posterior half
of the fish.
Adipose fin: Fleshy finlike projection
without rays, behind the rayed dorsal fin.
structure on the heads of most catfish.
Johnny Jensen @