They may have been belted by New Zealand but the Australian U20s are wary of the Fiji Under 20 rugby team when they square off tonight.

The Fijians were beaten 63-3 by a rampant New Zealand U20s side but did show some signs of life in the second half.

They showed they are capable of the kind of rugby Fiji is known for at the national 15's and Men's Sevens level and the Australians believe they must improve on their performance against Samoa if they are to remain undefeated heading into the Saturday showdown with New Zealand.

The Fiji Under 20 rugby team will play Australia at 7 tonight in the Oceania Under 20 Rugby Championship.