PlanetCatfish.com

I am preparing my talk for the catfish convention and wanted to throw this out to the group. Besides the following species, multipunctatus, nigriventris, schoutedeni, petricola have there been other documented spawnings without the use of hormones. I know many other species have been spawned in Europe with the use of hormones.

Mark

• More than one "species" of "S petricola" has been bred (dwarf and Burundi).
  So-called "white polli", whatever that is... (apparently also a Tanganyikan).
  If we are to believe the reports on this forum, S granulosus.
  I think I remember reading somewhere of another riverine Syno, but the name escapes me.

Finally, I vaguely recall that some Synos are commercially pond-bred (without hormones) in places like Nigeria.

I have breed S. petricola "Burundi" and S. cf. nigrita without hormones...

Sorry, only german...
http://www.synodontis.net/CONTENT.PHP?AW=209&SD=1
http://www.synodontis.net/synodontis/cf ... ericht.pdf
http://www.synodontis.net/CONTENT.PHP?AW=163&SD=1

Hi Corybreed

S.Granulosus has been bred this year & i spoke to the breeder last month at a trade show. I will be posting more photos of some of the young shortly. He did say angelicus may be among his next projects.

The lists previously mentioned are quite accurate although some information seems sketchy on a couple of things - i remember an article in FAMA years ago about spawning clinches / behavior in S.Brichardi without the event actually occurring. No follow up was published but it was eluded to that it was only a matter of time.

I have read reports on S.Contractus but details seem scarce. Mochokiella has been bred i believe as well although PC states it is unreported.

Dinyar mentioned the dirt pools & i recall seeing somewhere of about 3 of 4 species bred this way but i can't seem to find the article on the net now i'm looking for it.

Hopefully you'll get more responses from other people giving a more definitive picture

Richard B

i remember an article in FAMA years ago about spawning clinches / behavior in S.Brichardi without the event actually occurring. No follow up was published but it was eluded to that it was only a matter of time.

I think that article was about S. angelicus.

I have a group of "F2" S. schoutedeni that were bred by Sallie Boggs in Pittsburg.

Hello Paul,
Wow! is that the woman who submitted an article to FAMA about breeding shoutedeni @10yrs ago? At any rate does she have any more? I currently own a dominant male about 4". would like to get more.

naturalart

Hi!

My third Synodontis...
S. schoutedeni, without hormones.

They spawned and the eggs are hatching now.


Regards,
Oliver

Congratulations Oliver. I know that Sally Boggs used a false bottom on the breeding tank and the eggs fell through. How did you collect the eggs.

Mark

Thank you Mark!

I used a "Laichrost"...
Spawninggrid? Spawningnet?

And they are growing...


Best regards,
Oliver

That is great Oliver, will you be writing up a report as you did with the nigrita ?

Birger

Hi Birger,

in german - yes!

In english - i dont know. I´ve lost Achim for translating...

In some weeks i can post more details. I work on the second spawn...

Best regards,
Oliver

in german - yes!

Let us know where we can find it when you get around to it,luckily for me that is where my family is originally from.

Birger

Hi,

the pictures from the german report(DATZ 12/2007):

male:

pair in the breeding tank:


yougsters:



and an other male, who lost the colour/pattern

Thanks Oliver

That last picture is interesting...I am assuming it stayed that way permanently?

Birger

thats amazing! Couldnt we translate his article in the babblefish thing? Or if Birger needs some help? I'd love to read it!

http://babelfish.altavista.com/

Babelfish does make a lot of errors, unfortunaltely. An example: in a spanish article, translated to Englich, Rio negro was translated as black river - babelfish does not recoginse names, and has trouble with grammar

I am sure that one of the German (speaking) frequenters of this forum can translate the article. I think Marc Van Arc's German is pretty good, and certainly no flaws in his English.

But as with all these things, it's also a question of having the time (and motivation) to sit down and translate it.

--
Mats

The DATZ article information (and pictures posted here before our attachment feature existed) is now mostly lost to the majority and I know many would use it today.

@Oliver D - what are the chances on us working on an English version of this to put on this for the longer term?

Cheers,

Jools

Some of it is in the internet archives...

https://web.archive.org/web/20100923044 ... ericht.pdf

https://web.archive.org/web/20071025022 ... W=209&SD=1

https://web.archive.org/web/20071023044 ... W=163&SD=1

OregonOutdoorsChris wrote: ↑09 Mar 2023, 15:04 Some of it is in the internet archives...

https://web.archive.org/web/20100923044 ... ericht.pdf

https://web.archive.org/web/20071025022 ... W=209&SD=1

https://web.archive.org/web/20071023044 ... W=163&SD=1

Well played!

Thanks,
Eric

Hello, I spawn with hormones which seems/seemed tabboo despite it requiring a lot of fish keeping experience.

I'm posting because an interesting aspect is my broodstock adapt. Nowadays, if I induce one female and return it to the tank for maturation, several other females (not injected) will also ripen in syncronicity - possibly because of the hormones she is naturally releasing?

A second interesting aspect is the offspring become noticeably easier to spawn with each new generation. I expect that one day, no hormone stimulus will be needed with me and elsewhere. Perhaps that's already happening?