Bubbles
Bubbles is a Yellow Tang fish.
they're called "lantern' fish so they pretty much do produce their own light
yes bubbles help bring air to the fish and keep the water moving
Yep, it's called milt.
Go to the store and ask for a "bubbler", literally just a little device that makes bubbles. The kind/quantity you need depends on the size of your tank & number of fish.
they have an organ called a swim bladder. it is a buoyancy device
fish
You are supposed to have bubbles in your fish tank or else your fish will die because they don't have enough oxygen.
Are you sure they're bubbles and not eggs? If they're bubbles the it is just from your filter putting bubbles in the water.
MY DAD HAS HAD ALOT OF FISH AND I HAVE SEEN BUBBLES COMING OUT OF THEIR GILLS BEFORE, IT USUALLY MEANS THAT THEY HAVE ALOT OF AIR COMING INTO THEIR LUNGS SO IT MAKE BUBBLES WHEN THEY BREATHE OUT.
Then your filter is not on.