Fig. 1

a Suture is attached to the data logger which is then anchored to the body of the fish or the enclosure of the wound. b Atlantic cod fish implanted with milli-HRT between the pelvic fins
a Suture is attached to the data logger which is then anchored to the body of the fish or the enclosure of the wound. b Atlantic cod fish implanted with milli-HRT between the pelvic fins