COMMISSION DECISION of 4 April 2008 establishing that the Black Sea and the river systems connected to it do not constitute a natural habitat for European eel for the purposes of Council Regulation (EC) No 1100/2007 (notified under document number C(2008) 1217) (Only the Bulgarian, Czech, German, Hungarian, Italian, Polish, Romanian, Slovak and Slovene texts are authentic) (2008/292/EC)