How can you tell if a water dragon is sick?

What structure does bony fish have that sharks don't? How do you get the pot from the gopher on Time Tangled Island? Can you keep a certain type of frog in with Bettas? How can you tell the difference between a male or a female goldfish? How much is an aquaculturist's hourly salary? Who is the nicest Shark? What are learned behaviors for a sea horse? Do sting rays have predators? Are sharks part of the fish family yes or no? What is a good name for a fishing spot? How come betta fish are fighting fish? What do hermit crabs sound like? What type of water do redfish live in? What eat electric eels? Where can one find fish tanks for sale at a discount online? Is water filtered to remove debris and other living organisms? Is white perch edible? What is a good tanks size for a beta? What is the blobfish enemy? Where would you expect to find more living organisms in cold or warm water?