try Dace
Rudd
lhve a soft body that is protected by two bluish-hard shells
Flying purple people eater
European (or Common) Starling and the Common Grackle
Lake
yes....kinda...stars are bluish white when it is brighter
oyster
Flashlight fish typically have a dark, bluish-black body that helps them blend into their surroundings in deep-sea environments. They possess bioluminescent organs under their eyes that emit a bluish-green light, which can appear as a glowing spot in the dark. This unique adaptation helps them communicate and attract prey in the depths of the ocean.
Quite obviously it is. It is known to have the highest elevation of any freshwater body.
Oasis.
oasis
Lake Superior