The game is not just about spaking the cat all around until she gets into the box. If the cat falls down the abyss or disappears from the screen in any other way, you loose. Also, you don't have to worry about picking up all the fish, but you know how it goes - the more the merrier. Sometimes it's just not worth the risk. If you take my advice, and just ignore the fish, the game gets ridicioulsy easy. I think they should have set some minimum number to collect as obligated to fisnih the level. Like this, it feel less challenging and to be honest, it gets boring pretty quickly so I doubt most of you will stay long enough to test all 30 levels.