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I cannot help with the fish (sorry) but I think the "flowers" are a brown algae likely Funnelweed (Padina cf gymnaspora) or Marine Peacock's tail (Padina pavonica).
Thanks Scubamann. It definitely looks like Funnel Weed.
Thank you so much for posting. It's totally beautiful and I loved it so much. The fish looks so cute. -silicone baking cups
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