The subtitle for picking up a Tadpole with a bucket is just the generic "Bucket fills" subtitle while picking up other mobs with buckets like fish and axolotl have unique subtitles
- Turn on subtitles
- Spawn a Tadpole
- Pick the Tadpole up with a Water Bucket
- Look at the subtitles
The subtitle said "Bucket fills"
A subtitle that would reference the tadpole being scooped up