The national championships also double as the Olympic trials and New Zealand's team for London will be announced at their conclusion next Friday night.
Snyders is a certainty to be among the small squad, and should be joined by Melissa Ingram (200m backstroke) and Gareth Kean (100m backstroke) and 200m, 400m and 800m freestyler Lauren Boyle who have already qualified.
The women's 4x200m freestyle relay have gone under the qualifying standard.
Others such as Natalie Wiegersma (200m, 400m individual medley), Sophia Batchelor (100m backstroke, 100m butterfly), Natasha Hind, Penny Marshall and Amaka Gessler (100m and 200m freestyle), Matt Stanley (200m freestyle) and Kurt Bassett (200m backstroke) will also hope to convince the selectors of their worth.
But it is Snyders who looms as the most exciting prospect.
In the past two years he has gone from being a good breaststroker to one nearer the top echelon of the sport.
He's ranked seventh in the world in his favoured 100m and 12th in the 200m.
What has happened, he says, is a culmination of "patience and determination" and "sticking with it".
He has had his doubts, like most top sportspeople, but seems to be discovering what works for him.
"I think it just comes down to keeping my head in the heats, semis and finals and doing all of my processes," he said.
"And believing in myself, really. I know I can swim just as fast as those [top] guys, it's just putting the right race together at the right time."
