How long should I cook tilapia for?!
It takes very little time to cook a tilapia fillet. Place it in a hot skillet with a little butter and brown in on one side. Lots of times it's done when that side has a crispy coat but if yours isn't done, then flip it over and quickly cook it on the other side for no more than a minute. That's it.
Hope that helps.
You don't say how your cooking the tilapia, or its thickness, so it's hard to be precise.
Check out my answer though in these previous questions on how to know when fish is "done":
...you might be interested in these too: