If anything this proves a sudden cataclysm covered these fish with sediment. The only way for anything to fossilized is to be quickly inundated. Fossils like this cover the whole earth and fossilized sea life is found on top of the tallest mountains. The fountains of the deep were suddenly opened and the water canopy that enveloped the earth rained on the earth to cover the highest mountains.
When Mount Saint Helens, in Washington State, blew it’s top trees on the slope were instantly petrified. Something previously unheard of. Science is never settled. Anything that happened millions of years ago is mere speculation and theory.
I think it was more apocalyptic than the Flood. Immanuel Velikovsky's Earth in Upheaval speaks of shoals of fossilized fish found in the UK and a ton of other examples, indicating (to me anyway) a tilting of the earth's axis or some other celestial catastrophe.