Even though they live in water, they don't have scales, don't swim, and aren't "fish."
I've scanned the cards so you can see the exact condition.
VTG POSTCARD - Stars of the Sea - Poems About Starfish
Starfish mysteriously disappearing along the Pacific Coast – Orange County Register
Sickly Starfish: A Q&A with Dr. Chris Mah
Sea Star Wasting Disease Our Life in the Pacific Northwest
Is Unbeaching Starfish Sustainable?
Sea Stars Cheapest Wholesalers
Sea Star Wasting Disease Our Life in the Pacific Northwest
Sea Star Wasting Disease Our Life in the Pacific Northwest
Starfish (Sea Star) Dissection
Deep Look, Ever Seen a Starfish Gallop?, Season 7, Episode 18
Critters - CoastwatchCoastwatch