Fiend Listing - Monster Arena
Valaha is a Ruminant-type enemy that can be found in the Cavern of the Stolen Fayth. You need to capture five of each Ruminant-type enemy in order to unlock Juggernaut in the Species Conquest section of the Monster Arena.
Valaha can do a fairly heavy amount of damage to your party members. The best strategy is to have Wakka use Dark Attack or Dark Buster on them to blind them, which will prevent them form being able to land their physical attacks.
|Sensor||“Inflict darkness to evade its attacks.”|
|Scan||“Inflict darkness to hinder its attacks. Its Flame Ball is a powerful fire attack that hits all, but it needs to Charge before it’s released. Kimahri can learn Fire Breath.”|
They can be found in the Cavern of the Stolen Fayth though they tend to be fairly rare. Unfortunately there are no secret spaces that you go to find them more easily - just keep at it!