In the first issue of man of steel in the back John Byrne wrote a letter. In the letter he said that when he looks at the superman symbol he see two fish. And that's how he draws it.

Then in action comics new 52 #0. When lois first see the symbol she says it is stylized goldfish. Jimmy says she looking at the negative space. And Perry says it looks like an S.

@AllStarSuperman: That's pretty cool.

@TheCannon: i thought so.

I have heard this before. People see the negative space around the S. I can't remember, but I have heard other writers/artists describe it that way.

interesting!

That really cool. I remember seeing Lois say that, and I looked, but I can't see the fish.

i'm trying so hard to see the fish right now =/