Bluey is a 2.5 star Dragon Arkadion. Its element is Water.
Third tile North of Agramis. Spawn rate 1/200 (0.5%) with a guaranteed encounter at 2000 battles without meeting a hatchling.
Catching Tip #1: Metallodious's Escape ability makes farming for rare Arkadions at least twice as fast. No waiting for attacks to process or collecting 3 XP and 10 gold after battles, and the Escape move works 100% of the time. Thanks to reedobandito for the tip .
Let the hatchling attack Seaspine or Seaquill. As long as your Seaspine is of a lower level it should hurt the hatchling just enough to increase it to 100% Catch Rate. Nothing is worse than finally having the monster appear only to not catch it due to it not being a 100% Catch Rate.
Evolves at lvl 6
Evolves at lvl 25
Evolves at lvl 50
Stats taken from Lv. 4 immediately after capturing.