There are two types of Blue Eyes, BEC and BES. Even among each type, there are two different color bases. The one in the back of the tank is more olive/brown based, the one hanging on the driftwood having this anus facing us is more grey/bluish based.
That would be the famous blue eye. There are two types but Not sure which type.. Heck I dont even know which type I have.
Sent from my C6902 using MonsterAquariaNetwork App