All about the ancient tribes
A skeleton horse can be tamed by killing the skeleton that is riding the horse. Then, the player will be able to tame it. A saddle is required, too.
Currently zombie/skeleton horses have no use, cannot be tamed, and can only be spawned through the use of in game commands. To bring them up to par with regular horses they need to be tameable somehow and capable of wearing saddles and horse armor. …
You can summon a skeleton horse whenever you want using a cheat (game command) in Minecraft. There are many options for summoning skeleton horses. You can spawn one that is wild, tame or wearing a saddle. A skeleton horse does not spawn naturally in the game so you have to use the /summon command to spawn one.
Skeleton horses should behave like skeletons (Burn in the sun & despawn quicker in the day) … The only way to find/ capture a skeleton horse is if a living one gets struck by lightning.
The rarest regular spawning horse is easily the skeleton horse…
A skeleton horse does not have an inventory and cannot be equipped with a saddle or given armor.
How to Enter the Command
Skeleton horses are rare mobs that are a variation of skeletons. They can spawn if a horse is struck by lightning. They despawn very quickly though. Unlike regular horses, they will not kick the player off if they go more than 2 blocks underwater but will sink instead.
A skeleton horse that spawned from a skeleton horse spawn egg cannot be ridden on, open its inventory, put a saddle on it, be tamed, feed it. An undead horse that spawned from an undead horse spawn egg cannot be ridden on, open its inventory, put a saddle on it, be tamed, feed it.
Nothing attracts lightning yet. … When lightning is to strike, random X and Z coordinates within the chunk are chosen, and the block just above the highest block that is liquid or blocks movement is chosen for the lightning strike.
Since a skeleton horse is undead, the Instant Damage effect will restore health points to the skeleton horse. Try throwing a splash potion or lingering potion of Harming at the skeleton horse or shoot an arrow of Harming at the skeleton horse to restore its health.
The horses will last past the end of the storm, then despawn naturally if their riders were not killed. They become docile once riderless. You can put a saddle on them to make sure they become permanent once you get rid of their previous owners.
The horses are not tied up with rope and they can be wild or tamed. While playing the game, in both creative and survival mode, when I have moved away from the pen about 150 blocks, then return, the horses can and do despawn. If the horses are wearing armor, they do not despawn.
Zombie horses, like most mobs, can ride in minecarts and boats. Unlike other passive mobs, zombie horses slowly regenerate health.