What happens to a starfish to become a fossil?

Are seahorses endangered? Do agnathas have scales? Which fish live in Spain? What type of fin is located behind the operculum on a perch fish? What color is an American eel? Is salmon in french feminine or masculine? What is a Yellow fish with a black tail spot a large stomach and 1 inch length and He looks like some kind of molly? What species of fish can you catch in the ocean? Is a mermaid an imaginary character? How many legs does a shrimp have? Petco? How much karmex per acre in ponds? Why are snails placed in aquarium? What climate do eels live in? Why are nets used to catch and save people? Do tiger sharks eat stingrays? Is deep water more or less dense than shallow water? Why is your new fish turning gray? How does the whale shark adapt to its environment? When was Green sunfish created?