Rick: What is this? (Pointing to a picture of rocks in the ocean)
Kate: THOSE are Lobsters!
Rick: No, they're rocks.
Kate: (Pointing at a fish) And those are Fishes
Rick: You mean Fish not fishes
Kate: No, they're fishes
Rick: You don't say Fishes. You are supposed to say Fish
Kate: No, I say Fishes
Must be a little early to teach grammar....