Killie wary of Dargo threat
The Caley forward might not have scored in his last six matches and missed a penalty last weekend against Dundee United.
But Nish is convinced playing against the Ayrshire side will bring out the best in the 28-year-old, who moved to Inverness in June 2005 after five years at Rugby Park.
Nish said: "I know Craig Dargo from his time here obviously, and he's done really well up there.
"He was a good player but, maybe, he was here a bit long and got a couple of injuries which affected him.
"But he has moved up there and really clicked with Caley.
"He has gone a few games without scoring but has hit the net against us in our last couple of games, which is how these things tend to happen with players facing their old teams.
"Maybe, for the first year or so, you feel like you have a point to prove and put in that extra bit.
"But, after that, you just try and look forward and develop your game against other teams.
"I don't have that against Dunfermline when we play against them because a lot has changed at the club since I was there."
With his former East End Park team-mate Craig Brewster set for talks with Kilmarnock manager Jim Jefferies this weekend over a move to Rugby Park, Nish knows his place in the side could be under threat.
However, the 25-year-old insists the arrival of the former Dundee United player-boss would be a coup for the club.
Nish said: "I played with Craig for about a year at Dunfermline - mainly in training - and he was a great player.
"He is now 40 but that would not be a problem either because he could probably still play at 50 because he is so fit.
"He's great to watch and learn from, which I tried to do during my time there as he was a similar size to me and played in the same position.
"He will have no problem with his fitness because he looks after himself and the way he plays means he is not running all over the park either.
"It can only be a good thing for us if he signs, because, although we are not quite down to bare bones, we are a little lacking in attack when we have a couple of injuries."