Tangled 2 thanks for the great reports the past 10 years. They are informative. The autofish system is used for chinook salmon and not trout as of yet. There is a greater than >99% clip rate and each fish is weighed, scanned, and implanted with IDs. Tangled 2's fish are not trout.
The Autofish System The centerpiece of the Mass Marking initiative is the automated tagging and marking trailers (Figure 2A) from Northwest Marine Technologies, which have been employed for years in the Pacific Northwest for salmon management. The AutoFish System is an alternative to manual clipping and tagging in high volume stocking applications. The AutoFish SCT6 is a self-contained mobile system contained in a 44-foot aluminum 5th wheel trailer that has one dual exit sorter and six individual processing lines (Figure 2B). The system can sort by length, adipose clip, and coded-wire tag salmonines from 57 to 142 mm without anesthetic or human handling. The fish are never completely dewatered during the process, thereby reducing fish stress. Significant features of the system are: • Adipose clip and snout tag (Figure 2C) or adipose clip only or snout tag salmonines ranging from 57 mm to 142 mm total length. • Over 60,000 fish processed in eight hours with one skilled operator and an assistant. • Accurate counting and length sorting to within 1 mm of total length (Figure 2D). • No anesthetic required and no human handling. • Fin clipping rates and CWT placement accuracy superior to that of manual operations. Low mortality (<0.1%), very high clip rates (>99%), and excellent CWT retention rates (>98%). • Less costly to operate than manual clipping and tagging systems.