what is the smallest animal in the world?

The smallest animal in the world is one type of species in anglerfish with a scientific name that is photocorynus spinice, in the family of linophrydinae.the mature male has a length between 6.2 and 7.3;it is consider also one of the strangests underwater animal because of its depth( 990-1,420 m)

The female is less longer than the male and their body is 55milimettres ;the male is attached to the middle of the back of a 46 mm long female because that is how they mate. It’s called sexual parasitism and in five of the 11 families of anglerfishes, the males are tiny compared to the females and fuse for life to their mates by biting onto the sides, backs or bellies of a female.