Originally posted by feldon23
You're right. With my method, it's difficult and non-intuitive to specify less than 7 fish if ANY of them are random.
Well, if we were going to start from scratch, I see Prolific's idea of dragging fish or a Question (?) mark into 7 or 10 slots (since the 3D background version will have 9-10 fish slots) and then having a separate panel "Customize Random" similar to my prototype above.
Also, invertebrates could be integrated into this design.
Let me do a new prototype.
The Pseudografix one plus the one you originally posted are perfect. One panel with "Never-Rarely-Sometimes-Often" sliders for "Random Fish Settings" and the slot settings for "Fish in Your Tank".
After some thought I had this idea (and edited this message):