From Emil Chronicle Wiki

Golden Insmouse is a level 40 monster.

[edit] Stats

Basic	Combat
Level 40 Experience 3,000 Job Experience 3,000 HP 1,000 SP 58 MP 97 Behavior  ???	Type Water Animal A.SPD 2.00 ATK 29 - 43 DEF 300 C.SPD 2.00 M.ATK 7 - 13 M.DEF 999
Properties None Item Drops Snakehead Fish Sweat, Molten Gold, Gold Lump, Tiny Medal, Gold Bullion Skills  ??? Location  ???