diff --git a/pipeline/config/thresholds.yaml b/pipeline/config/thresholds.yaml
index e4bcca2..907f32c 100644
--- a/pipeline/config/thresholds.yaml
+++ b/pipeline/config/thresholds.yaml
@@ -15,7 +15,7 @@ frame_extract:
   height: 294
   underwater_r_minus_g: 5        # R < G-5 AND R < B-5 → hors eau
   trim_min_frames: 8             # skip if fewer underwater frames
-  bottom_visible_pct_min: 30     # abaissé de 50 à 30 — avg réel = 37.5%, iter auto 2026-05-11
+  bottom_visible_pct_min: 25     # abaissé 30→25 — GX019817 (29%) récupérable, iter auto 2026-05-12
 
 inference:
   ply_conf_threshold: 1.5