I'm sure the internals are quite different, but the GUI and graphics are remarkably similar. I wouldn't call it plagarism by any stretch, but it's got to be at least influenced. Not that balls on sticks are all that original of course.
Still, it seems to be very similar to Darwinpond and Genepool, so you would think the graphics would follow more closely after that.
The swimming physics look a little simplistic, but I would still be interested in knowing what sort of algorithms are going on.