Hi,
great to see this project continuing! With regards to the Asian arowana’s - maybe you can find some on eBay Germany, there’s some serious shops on there who might be able to help you. Else I can ask around, drop me a pm if you like me to.
Btw, even though you have a lot of space did you consider going with a higher number to reduce aggression?
good point, indeed... 3 is a decent number, especially talking about money. I can afford a certain amount of "fish money", but there is a data which is mandatory : do not wake the fears of my wife considering money... I will make the population of this tank little by little... on the next 2-3 years...
I found a Dutch guy who could provide me in Golden arowana, but being out of political/economical Europe (welcome in Switzerland), it's a bit more complicated to purchase (and to purchase legally) the asian Arows.
I'm sending you a PM to get more informations about the German possibilities...