that's probably a virus called "ick". My fish have had it many times, but only some have died if it's not taken care of. You should just go to the pet store and tell them you think your fish has ick and they should have a medicine you can put in the tank and it should disappear shortly.
It might be normal for a particular species of fish that is known to have white dots on their tails...
He can eat fish, fruit (including coconuts) acorns, red and white turnips. He cannot eat bugs.
The fish you are referring to is likely the Black Molly (Poecilia sphenops). They are known for their distinct black coloration with white or yellow dots on their tail.
If they are little white bumps just on the gills, then you have a male goldfish that is ready to breed. If the white dots cover its body then your fish is sick with ick, and you will need to go to the petstore to get meds. for the fish.
He can only eat fish, not bugs
If you are in the aquarium stage, the white balloon is on the side of the black fish with white polka dots. It's only on one of its sides so you have to watch it turn and stuff.
the fish will have dots
Some fish may eat bugs, others are simply attracted to them.
Goldfish are egglaying fish, so you would see several small white dots coming from her backend.
No. Their food is fish which they hide under their nose and as soon as they are partially digested provide with them their babies.
Filter a fish? Do you mean filtering a fish's tank? Well you have to filter any fish's tank.
Goldfish are egglaying fish, so you would see several small white dots coming from her backend.