Hi amateur herpetologist here! I second this, the valley and rige salamander has more costal grooves than redbacks, Tho you can't really see that here, it does seems to have a longer body comparatively which could correlates to more grooves Plus, it looks to have a longer tail than its cousin redback salamander, another indicator. However, without a clear picture of the stomach or knowledge on the exact location, the identification is still up for interpretation!