Thank god i dont live in europe.. Your life in europe seems way to regulated.. You cant keep a fis in less then 13 gallons!!!!! I have a 10 gallon tank with 12 neon a cory 3 dwarf puffers a alge eater and 2 crabs and they all do fine.... Kinda funny, the goverment in germany has a huge tax rate and then spend your money creating a bill to regulate the size of your fishtank.. 