Yes, there are Wels Catfish (145 Lbs and above) here in Portugal too!
For many years we have been telling people that they are here, but because of the lack of photographic evidence, many called us liars etc and so we decided to keep quiet about it until we could prove it. Lets just say we've proved it. If it is Wels that you are after please get in contact with us for more details.
We will say this, as fishing for them is very new over here, you could look at it as pioneering. We really can not say for sure what there is out there, but by what has been found out so far, there could well be some very big surprises install.