You've clearly worked hard on the graphics but the controls are simply awful and since only the center of the portal allows you through it's difficult to perform things like the infinite fall
This is obviously a first game so I'll give you advice rather than criticize you:) The graphics could use a lot of work but just keep practising. There aren't really any clear boundaries, the fish just stops! Background should be better quality, you could still do that but you'd have to make the fish blocky too for consistency. You've most likely used duplicateMovieClip or something like that to make the other fish which becomes incredibly laggy. Basically, the game at the moment isn't very good but fish games can be very addictive given a push in the right direction! Keep working on them and please don't take this the wrong way
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