Silurus glanis...overdue upgrade

I find this strange too. They should be able to handle anywhere from 32-80 degree's just by their native range in Europe. I know the cooler water ones in Germany and Russia for example do not grow as big because the cooler water does not put their metabolism and appetite into overdrive like it does in the Ebro. It has me thinking that if these are farmed fish from Spain they have adapted to that 76-78 range so much they cannot handle anything cooler or warmer. If I had to guess 76-78 degree's would probably be the average water temp in parts of Spain. The only other thing I can think of is that is what temp the fish was raised in from an egg and ot just cannot adapt as well to any other temp.

I have both mine outside in a pond in the uk. Freezing temps every year and never had ich both these fish were raised and bred in the uk. You may be onto something


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What about Czech? How is the weather there for winters and the wels farmed there?

knifegill said:

What about Czech? How is the weather there for winters and the wels farmed there?

Click to expand...

its cold there. This topic is interesting. I did get some from Germany last year that came in near freezing temperature. The ones I'm currently selling, are suppose to come from Czech republic...which gets cold during the winter.

Great to know, thanks.

I wonder if where they're produced has much to do with it. I did receive some from Germany a year ago, that came from frozen over lakes, should have kept some...

He looks amazing, much better colour than most of the albinos I see! I need to stay away from this thread.. one of these days I'll kick all my Koi out of my pond and just put a three footer in there haha

Wednesday13, Is yours female?

My baby, day of arrival http://s1176.photobucket.com/user/Knifegill/slideshow/wels