Former Super Eagles captain says little known Ethiopia will be a handful for teams in Group C of the 2013 Africa Cup of Nations
Oliseh said on cable television, Supersport after the Ethiopians forced defending Champions, Zambia to a 1-1 draw in the first game of Group C that the Walya Antelopes are tactically balanced.
"I am surprised with the way Ethiopians played. It shows they are a very good side and they should not be taken for granted.
"They did not panick even though they played with a player down. I am happy with the way they played and it goes to show that there are no minnows in African football again.
"They did not allow the Zambians to play the type of game they are known for and this is a very good Ethiopians side," Oliseh said.
Zambians and Ethiopia played out a 1-1 draw in the first game of Group C.