Hemisynodontis
membranaceus (Geoffrey-St.Hilaire,
1809) |
his Mochokid is instantly recognisable by the very large maxillary
barbels bearing a black membrane, from which its scientific name
is derived, refering to the presence of a membrane on the barbels
of this Synodontis.
In its native habitat this Syno spends
a good bit of its time inverted at the water surface scooping
up zooplankton and phyloplankton with its maxillary barbels, but
in captivity it doesn't seem to do this as much as the food is
probably readily available at all depths.
The genus Hemisynodontis is Monotypic
(contains only one species) and there is a school of thought
from some authors that it should be reclassified into the Synodontis
genus. The main difference between the two genera of Hemisynodontis
and Synodontis is the number of gill rakers. The Synodontis
genus has between 7-33 and our Factsheet for this month, Hemisynodontis,
has 59-65. That is a big difference along with the mandibular teeth
with Synodontis 6-90, versus Hemisynodontis 8-16.
Hemisynodontis membranaceus is not a colourful fish by any
means with its grey/brown body colour
and somewhat darker belly region, but it does have a charm all of
its own when you see it out cruising the tank looking for its next
feed.
Above can be seen the impressive looking barbels
on this species bearing a black membrane
Mandibular Teeth; 8-18, usually 9-14. Wide
membrane bordering the edge of the maxillary barbel, which is the
one originating from the upper jaw. Body with large adipose fin
is short and deep. Caudal fin forked. Gill rakers 59-65.
Adult:
Ground colour of head; dark grey. Dorsal region and flanks; light
to dark grey. Ventral region; dark grey to black. Dorsal and adipose
fins; light to dark grey. Maxillary barbels; with a wide black membrane
along their whole length. Mandibular barbels; with small black membranes
on the ends.
Juvenile: As per the adult but with ill defined blotches
on the body and with round dark spots on the rayed fins which form
a more or less regular transverse series.
It is a peaceful and hardy fish even though
it does grow quite big, but I have found that it really is a gentle
giant. Do give it a decent size tank and I would suggest a 4ft being
the minimum with an aquascape consisting of rockwork or pipes for
it to retire too, and large plants such as Giant Valis (Vallisneria
gigantea) that grow partly along the water surface, and then
you could witness this ‘Synodontis’ eating in its
inverted position.
Not recorded, but the females are somewhat
fatter and bigger than the males.
The usual feeding for Synodontis species,
being good quality flake food, tablet food, frozen bloodworm, shrimp
and prawns.
| Etymology |
Hemisynodontis:
Hemi = half; Syn = together; odon, odontos
= tooth.
membranaceus : Refers to the
presence of a membrane on the barbels of this Hemisynodontis.
|
| References |
Northern Area Catfish
Group; Information Sheet 01
Burgess, Dr.Warren E; Atlas of Freshwater and Marine Catfishes,1989
Danny Blundell |
|
|
| Synonyms:
|
| Pimelodus
membranceus, Synodontis guentheri, Synodontis membranceus. |
| Common
Name: |
| Moustache
Catfish |
| Family: |
| Mochokidae |
| Subfamily: |
| Mochocinae |
| Distribution: |
| Africa: Chad,
Niger (including the Bénoué) Senegal, Gambia and
Volta basins; also the Nile in northern Africa. |
| Size: |
| 35.5cm.
(14½ins) |
| Temp: |
| 22-26°C
(71-79°F) |
| pH.: |
| 6.5 - 7.5 |
| Donation: |
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