3 Jun
2019
3 Jun
'19
9:58 a.m.
Ce poisson est Auchnoglanis occidentalis, il se trouve dans le lac Volta au Ghana. Un
membre du groupe poisson-chat.
Emmanuel Mensah Tetteh-Doku
Ghana
From: Emmanuel Mensah Tetteh-Doku <meted2(a)gmail.com>
Sent: 03 June 2019 10:53
To: Randall Brummett <rbrummett(a)worldbank.org>
Cc: William Leschen <william.leschen(a)stir.ac.uk>uk>; sarnissa-african-aquaculture
Mailing List <sarnissa-african-aquaculture(a)lists.stir.ac.uk>uk>;
sarnissa-french-aquaculture Mailing List
<sarnissa-french-aquaculture(a)lists.stir.ac.uk>
Subject: Re: Who can identify this fish
This fish is Auchnoglanis occidentalis, its found in the Volta lake in Ghana. A member of
the catfish group.
On Sun, Jun 2, 2019 at 4:32 PM Randall Brummett via Sarnissa-african-aquaculture
<sarnissa-african-aquaculture@lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>
wrote:
Yes; this is the fish that gets into the cages in the Volta Lake. These grow fast but are
light averse. We tried once to grow out a bunch that we accidentally caught in a seine
net, but they all hid in the bottom of the cage.
Enviado desde mi iPhone
El jun. 2, 2019, a la(s) 07:17, William Leschen
<william.leschen@stir.ac.uk<mailto:william.leschen@stir.ac.uk>> escribió:
[External]
Dear Randy
Thank you for writing in – although im not an expert !! that’s what I thought -
Chrysichthys nigrodigitalis - what the French and ivorians were doing well at breaking
the hatchery cycle and grow out in Cote D Ivoire in 1990s – 120 MT in one year late 90s
from one farm unfortunately this stopped during the later troubles – If it is this
fish they are found widely in the commercial tilapia cage nets on Lake Volta entering
when smaller with the tilapia and then growing to significant sizes 1.5 – 2.0kg in just
6-8months from the feed dropping down through the cage – They are highly valued in Ghana
(3 X kg price compared to Clarias and tilapia) whilst still not grown commercially to
any scale – to my knowledge? - But surely have potential as a commercial species – look
out for French published papers on the Machiron as they call it from 1990s ……
Perhaps my French and francophone colleagues can write in and tell us more details?
Best wishes will
Cher Randy
- Bien que je ne sois pas un expert !! C’est ce que je pensais - Chrysichthys
nigrodigitalis - ce que les Français et les Ivoiriens faisaient bien pour briser le cycle
des écloseries et se développer en Côte D Ivoire dans les années 1990 - 120 MT
en une année à la fin des années 90 d’une ferme, malheureusement, cela s’est arrêté au
cours des derniers troubles - Si c’est ce poisson qu’ils trouvent en abondance dans les
filets commerciaux de cages à tilapia du lac Volta qui entrent plus petits avec le tilapia
et atteignent ensuite des tailles significatives de 1,5 à 2,0 kg en seulement 6 à 8 mois,
à la suite de la chute des aliments à travers la valeur au Ghana (3 X kg prix comparé à
Clarias et tilapia) sans grandir commercialement à une échelle - à ma connaissance? - Mais
il y a sûrement du potentiel en tant qu'espèce commerciale - recherchez les articles
publiés en français sur le Machiron, comme ils l'appellent depuis les années 1990…
Peut-être que mes collègues français et francophones pourraient nous écrire et nous donner
plus de details?
Amicalement Will
See attached
From: Randall Brummett
<rbrummett@worldbank.org<mailto:rbrummett@worldbank.org>>
Sent: 02 June 2019 11:31
To: john walakira
<johnwalakira2003@yahoo.co.uk<mailto:johnwalakira2003@yahoo.co.uk>>
Cc: sarnissa-african-aquaculture Mailing List
<sarnissa-african-aquaculture@lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>;
Babatunde Oreyemi <oreyemibabs@gmail.com<mailto:oreyemibabs@gmail.com>>
Subject: Re: Who can identify this fish
This one is a chrysichthys species. Where was it caught?
Randy
Enviado desde mi iPhone
El jun. 1, 2019, a la(s) 08:08, john walakira via Sarnissa-african-aquaculture
<sarnissa-african-aquaculture@lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>
escribió:
[External]
Bagrus docmac one of those under the red list and very delicious and a high value fish.
http://www.iucnredlist.org/details/182237/0
Uganda (NARO-NaFIRRI) is developing it captive breeding technology but if have succeeded
in Nigeria, Please share information.
Regards,
John K. Walakira (PhD)
Senior Research Officer (Aquatic Animal Health),
Interim President-Elect, World Aquaculture Society-Africa Chapter,
Program Leader, Innovations and Post Harvest Fisheries Programme,
National Fisheries Resources Research Institute-NARO
P.O.Box 530,
Kampala, Uganda
Mob: +256 777 673696
Twitter: @JWalakira
On Friday, 31 May 2019, 01:09:26 GMT+8, Babatunde Oreyemi via Sarnissa-african-aquaculture
<sarnissa-african-aquaculture@lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>
wrote:
Hello,
This fish was caught in the wild. We are not sure of the name but sure that it's a
catfish member.
Kindly give us the name pls.
Babatunde Oreyemi,
Beekeeper/catfish fingerlings producer,
Ijebu Ode, Ogun state, Nigeria
Tel: +2348055203894
Whatsapp: +2349054569134
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Emmanuel T.D Mensah (PhD)
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