We now resume regular programming. Australia won at Brisbane, and England lost the first Test of an Ashes series. And “Goat” Lyon crossed 400 wickets. But it was the debutant wicket-keeper Alex Carey who wrote his name into the record books.
https://www.espncricinfo.com/player/alex-carey-326434
Here are the best innings fielding figures for those making their Test debut:

Carey was one of the few to make 5 dismissals in an innings on debut. Yajurvindra Singh is the only one to do so as a non-keeper. Also note Rishabh Pant’s 5 dismissals in an innings.
Now for match fielding figures on Test debut:

Here, Carey equaled the record of 8 dismissals in an match on debut, earlier held by HB Taber (Aus) and CMW Read (Eng). However, Carey is the only one with 8 catches, as the other two had 7 catches and 1 stumping.
Yajurvindra Singh also holds the record for the most catches (7) by a non-keeper on debut. Rishabh Pant is one of the keepers with 7 catches on debut.