I've recently changed the lighting on my tank from incandecent to flourecent and notice a that my tigers started to stay near the bottom of the tand or in darker corners. The wattage of the lights hasn't changed but they seem to be behaving differently. Any insight would be appreciated.

never had any problem with lights but when i put a glossy background in my tank the oscar does the same as yours , seems scared and stays in the corner of the tank. changing what there used to seems to freak them out

Yes, would think they need some getting used to. Oscars are often said to prefer dim light but mine doesn't seem to care. I *think* there is still a difference regarding how much light is actually produced comparing light bulbs and fluorescent tubes, means the latter give more light at the same wattage. May be wrong though, physics is definitely not my thing.