Skeleton horse are undead viarants of regular horse,these mobs are very passive which means that they are very friendly mobs,they can be tamed if you kill a thats riding it and the skeleton horse is tamed,onces a skeleton horse is tamed and saddled you can control it to which place you want to go to
Kinda reminds me of how to tamed a ragular horse and ride it,you can give a regular horse armor
Unlike other passive mobs,skeleton horse slowly regenarate health evident by their death bar while riding a tamed horse
This is the same case for normal horse
However,they cannot be bred and fed