Mink ?lol most of those fish where double figures and tge biggest more like 20+ it was carried over considerable obstacles, so no !
We have ditches that lead directly into the upper hodder and are also well within otter distance from the ribble and one of its tributaries . All contain otters
Mink ? Not seen one here for a decade previously, its full of traps for stoats etc and all keeperd ground
No chance was it Mink, all Muslid eat head backwards as they like brain , seen Mink struggle with medium large size chub of 4-5 lb ( ex River keeper )