7245ce09_4_Red_Bricks___Bone_Fish_Gamer__Brick
[Location] Herbology Greenhouse (2) [How to get] Place three Mandrakes into their pots to reveal the red brick. [Cost] 75,000 [Brick] 
Singing Mandrake
Lego Harry Potter: Years 1-4 Red Bricks | Bone Fish Gamer
Brick