No. It is not possible for a male cat to have kittens. In order to have kittens a cat must have a uterus and male cats do not have a uterus. If your male cat is having kittens, it is not a male, it is a female.
The difference between a male fish and a female fish is that the female lays the eggs and the male fertalizes them when she leves. But scientist really don't the main difference. One has a vagina and the other has a penis.
The difference between a male donkey and a female donkey is their reproductive organs and their names. A male donkey is referred to as an ass or jack and a female donkey is referred to as a jenny or jennet.