| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:26.79 | Bluefins Fall Pentathlon | 2025-11-14 |
| 100m Breaststroke | 1:28.13 | Bluefins Fall Pentathlon | 2025-11-14 |
| 100m Butterfly | 1:29.65 | Icebreaker Invitational | 2026-01-30 |
| 100m Freestyle | 1:08.25 | Bluefins Fall Pentathlon | 2025-11-14 |
| 100m IM | 1:20.30 | Icebreaker Invitational | 2026-01-30 |
| 200m Breaststroke | 3:08.43 | 2025 SNL Provincial Championships | 2025-05-30 |
| 200m Freestyle | 2:31.74 | 2025 SNL Provincial Championships | 2025-05-30 |
| 200m IM | 2:52.56 | 2025 SNL Provincial Championships | 2025-05-30 |
| 400m Freestyle | 5:16.81 | Icebreaker Invitational | 2026-01-30 |
| 50m Breaststroke | 37.50 | Icebreaker Invitational | 2026-01-30 |
| 50m Butterfly | 36.22 | Icebreaker Invitational | 2026-01-30 |
Tam, Joshua's top personal bests include 100m Backstroke (1:26.79), 100m Breaststroke (1:28.13), 100m Butterfly (1:29.65), 100m Freestyle (1:08.25), 100m IM (1:20.30).
Tam, Joshua swims for Mount Pearl Marlins.
Tam, Joshua has competed in 4 meets.