March 6 (Reuters) - Oil and gas company Canadian Natural

Resources ( CNQ ) on Thursday posted a fall in fourth-quarter

profit as weaker commodity prices overshadowed a rise in

production.

The Calgary, Alberta-based company's net income fell to

C$1.14 billion ($794.76 million), or 54 Canadian cents per

share, in the three months ended December 31, from C$2.63

billion, or C$1.21, a year earlier.

($1 = 1.4344 Canadian dollars)