If it had food, and depending on the size of the cup, then probably, yes.
yes
the truth is they can but put algae in it so they can eat
Tadpoles are able to live in the rainforest, where you can hear frogs croaking, foresty streams, sometimes frogs lay them in unused pools or ponds in backyards, and usually 9x9 meter shallow ponds.
No. Until tadpoles become frogs, they remain in water.
yes.
Mackerels are saltwater fish. Tadpoles live in freshwater. Meaning a mackerel wouldn't have much chance of eating tadpoles.
Only if you leave the water out for about a week. Tap water has chemicals that harm the tadpoles.
Tadpoles have gills, a tail, and a suction cup like mouth.
no there are no tadpoles in the coral reef they can not live in salt water
Yes with enough water.
In their natural state, tadpoles live on pond vegetation, especially tiny algae and plants. Tadpoles in captivity benefit from boiled lettuce which has been cooled down.
If its in a pond probably, but if its in a small enclosed area, then the crayfish can eat the tadpoles.