How do you draw a stingray's food chain?

What is the scientific name of doctor fish? How long does the gambusia fish live for? What do you call a creature having fins? Scientific name of eel? Can I use Orbeez in my fish's tank? What minerals are in salmon? What to porbeagle sharks eat? Can a moon crab live with a hermit crab? Do guppies have a hard outer-covering? How fast do koi swim? Where do you measure operating clearance of the clutch? How long does it take before the female red fire platy gives birth? What shark eats primarily crustaceans and mollusks? What kind of fish will keep your tank clean? How does the vinegar eel move? What is wrong with your fish if it keeps floating at the top of the bowl but is not dead? Do sharks swim in clear water? Why do fish and frogs lay a large number of eggs each time? Why is shark valley called shark valley? After the female Guppy gives birth does the gravid spot go away?