No killifish like to nip at fins.
Sorry to say, But he is dying. The nipped fins might be because he was attacked by another fish. And since that happened he probably can't swim as well.
The tadpole may well make a meal of the guppy or at least bit chunks of the guppys fins. I would not advise it.
pretty much any fish except their own kind, but don't mix them with fish that may nip their fins, such as tiger barbs.
Although they are listed as peaceful, they have been known to nip the fins of guppies when placed together. They are best to have a tank to themselves
Guppys are special fishes that DO NOT lay eggs. They give birth to young.
No. If you exclude the length of the tail (caudal) fin in some male guppys, under normal circumstances, female guppys grow to around double the size of male guppys
No
no
Some fish (for example guppies) have long wavy fins, some other fish such as mollys like to nip at these fins, if your fish are doing this then it would probably be best to buy another tank and separate them.
no
Poecilia reticulata