He was born in Aigio. He studied at the Athens School of Fine Arts from 1976 to 1981 under the guidance of Dimitris Mytaras, Yiannis Moralis, and Giorgos Mavroidis. Initially, he began with a limited palette of earthy colors and intermediate gray tones, creating paintings of great sensitivity and simplicity, where the intensity of the brushwork plays a dominant role. In 1995, he enriched his palette with vibrant shades of red and green, while also producing large-scale compositions. Feidakis exhibited the paintings he created in numerous exhibitions both in Greece and abroad.