WATCH: Which Marsh caught it better?

Brothers Shaun and Mitch Marsh have wowed the WACA crowd with a stunning catch each on day one of the opening Commonwealth Bank Test against South Africa.

Report & Highlights: All the day one action in Perth

Younger brother Mitch was the first to pounce, reeling in a searing edge off Stephen Cook’s bat from just the fourth ball of the day bowled by spearhead Mitch Starc.

Mitch leapt high and too his left to snag the opportunity with both hands and give the Australians a dream start after the Proteas won the toss and elected to bat.

It was a case of anything you can do I can do better when Shaun, eight years Mitch’s senior, took a screamer at short leg to dismiss middle-order batsman Temba Bavuma, just two balls after he reached his maiden half-century in Australia.

Bavuma played back to off-spinner Nathan Lyon, edged the ball onto his thigh guard, and watched on as Shaun dived full-length to his right to take the one-handed catch just millimetres off the ground.

If the catches weren’t enough to make this match special, it’s also the first Test the Marsh brothers have played together on their home turf in Perth.

The pair of classic catches exemplified the outstanding fielding performance by the hosts in the opening two sessions, who chased after everything, were spot on with their returns to the wicketkeeper and held onto every offering, apart from two extremely difficult chances that would have outdone the efforts of the home-town heroes.

Usman Khawaja, fielding deep short leg, put down a "quarter-chance" according to Wide World of Sports commentator Kevin Pietersen when Dean Elgar’s whip off Starc went in, and out, of the Queenslander’s left hand.

JP Duminy then had a life two overs later when Nathan Lyon, at point, flung out his left hand to a lofted square drive but couldn’t hold onto the very hot chance.

The dropped catches didn’t hurt Smith’s charges with both men back in the pavilion inside the 13th over.