Sorry to keep asking questions, but.....

Is there a hierarchy to the categories, or can fish be entered in either, both or all categories for which they qualify? And if so, can the same photo be entered in multiple categories.

For example, an albino blue marble might be entered in class 3 Gold & Marble class 5 Albino or class 7 Blue and Green.

Or am I overthinking this, do I just enter a photo in the category in which I think it belongs, and leave it to the judges/competition organiser to move it to a more appropriate section as they see fit?