Re: [Killietalk] Killietalk Digest, Vol 62, Maylayan Snails as fish egg eating pests/breeding dwarf Corydoras

[Larry Waybright <apistomaster at clearwire_net>]

I use a permanent breeding set up to raise the dwarf Corydoras, C. 
habrosus and C. hastatus.
These tanks have numerous Malayan Trumpet Snails(MTS) and extremely high 
populations on Cherry Shrimp and neither animal causes any losses of 
viable Corydoras eggs. Corydoras eggs are comparable to many killiefish 
eggs in both size and toughness although their incubation periods are 
normally about 5 days.
The breeding tanks have less than 1/4 inch of FloraBase substrate, 
Anubias growing on wood and a surface layer of Tropical 
Hornwort(Ceratophyllum submersum). I also provide a sizable rubble pile 
of hollow ceramic bio-media to provide numerous hiding places for 
catfish larvae. Two sponge filters similar to HydroSponge IV are used, 
one has a MaxiJet 600 power head on it.
I begin with a dozen breeding sized Corydoras and regularly harvest 25 
to 50 young Corys yet the population remains stable at about 100 of 
various sizes not counting the hiding larvae.
I only note tht the MTS eat fish foods and dead animals. They do not et 
eggs laid by the Catfish.
This method of breeding Corydoras only works for the dawarf species. 
Normal sized Corydoras such as C. sterbai will usually eat their own 
eggs if left with them so the MTS as egg predators is irrelevant but 
these snails are often present in my larger Corydoras breeding set ups 
which are similar; the main difference is that I remove the breeders 
after they have completed spawning.
Perhaps MTS can eat some fish eggs, I know I would not allow them to be 
present in a Tetra breeding tank until after the eggs have hatched but 
they do not seem to be likely to eat most viable klliefish eggs to me. I 
would suspect other causes f eat disappearance such as dead or infertile 
egg decomposition before blaming MTS. However, just because I tolerate 
them in some tanks, they can become so numerous in certain conditions as 
to be annoying to me. I have treated tanks with flubendazole and it did 
not harm the snails but I was treating to eliminate Hydra not snails so 
the dosage I used was not extraordinarily high.Here is a photo of a 
Corydoras hastatus breeding tank set up. 
http://s157.photobucket.com/albums/t41/apistomaster/?action=view&current=Chastatusbreed3.jpg
>
> Message: 1
> Date: Tue, 23 Sep 2008 20:39:19 -0700
> From: Larry Waybright <apistomaster at clearwire_net>
> Subject: Re: [Killietalk] Killietalk Digest, Vol 62, MTS eating fish
> 	eggs
> To: killietalk at aka_org
>
> I have MTS populations in all my permanent breeding set ups of Corydoras 
> hastatus and Corydoras habrosus and if the snails et any eggs it sure 
> doesn't show up in terms of the production of the catfish.
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 23 Sep 2008 21:13:36 -0700 (PDT)
> From: Stuart Scott <sscott255 at yahoo_com>
> Subject: Re: [Killietalk] Killietalk Digest, Vol 62, MTS eating fish
> 	eggs
> To: killifish discussion list <killietalk at aka_org>
>
> Interesting Larry, just how do you set up a cory breeding tank.
>
>  Take Care......Scotty
>
> Karlin of Quakertown
> http://www.karlin1.com
> 800.828.7798
>
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> ----- Original Message ----
> From: Larry Waybright <apistomaster at clearwire_net>
> To: killietalk at aka_org
> Sent: Tuesday, September 23, 2008 11:39:19 PM
> Subject: Re: [Killietalk] Killietalk Digest, Vol 62, MTS eating fish eggs
>
> I have MTS populations in all my permanent breeding set ups of Corydoras 
> hastatus and Corydoras habrosus and if the snails et any eggs it sure 
> doesn't show up in terms of the production of the catfish.
> Join the AKA at http://www.aka.org/aka/modules/content/index.php?id=9.
> Archives are at http://fins.actwin.com/killietalk/
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>
>   

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