Blazes are not able to swim up a lava stream.
MC-69582
Blazes can't swim up a lava
Resolved
Duplicate
0
David Melisek
(Unassigned)
Unconfirmed
Minecraft 1.8-pre2
Retrieved
Confirmed. Blazes used to float in water and lava in 1.7.10 and 14w05b, and no longer do in 1.8 as of 14w06b.
For reference, 14w06a is when all mobs got the new AI.