Guillermo is bigger than he looks in those pictures. He's 8 - 9 inches long. Guillermo and McLovin were put under my care after a close friend of mine in the military couldn't take them in an across country move. Guillermo is 2 - 3 years old, and is attached to McLovin's side. After getting these two fish, I put one of my snails, Wale, in the tank with them. They all get along swimmingly. Haha. Swimmingly.