- At the season finale of the 2019 Para-Swimming World Series, in Berlin (June 6-9), Arndt placed seventh in the final of the 100-m breaststroke SB13.
- At the 2019 Canadian Swimming Trials in Toronto, Arndt earned a multi-class bronze medal in the 100-m freestyle after posting a personal best in the morning preliminaries. He also set personal bests in the 400-m freestyle and 200-m individual medley.
- Instagram: @caleb_renee
- Favourite Movie: The Hangover
- Favourite Book: The Great Gatsby
- Favourite TV Show: Riverdale
- Favourite Band: The Tragically Hip
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