When he was a young artist he was taught by Konstantinos Volanakis, as well by the famous painter Ioannis Altamura, who also lived in their home place Spetses Island, Greece for 2 years (in the 70s) He made no personal exhibitions but participated in many group exhibitions.
Being rather wealthy, he refrained from selling his paintings, with a possible exception during the German occupation of Greece (1941–44).
His most important work is considered the sea battle of Armata that took part in 1822 at a location near the Island of Spetses.
The work is exhibited at the small family church overlooking the Old harbour in Spetses.
It is said that in some works of Konstantinos Volanakis, Koutsis participated in completing the waves, and the sea generally, which was one of his strong points.