What adds credibility to this theory is the fact that lungfish, the other surviving species group of lobe-finned fish, possess both lungs and gills, allowing them to breathe underneath and above ...
"It moved back up the digestive tract towards the gill of the fish." Antonio Duarte/Getty Speaking with CNN, Hasegawa said while he and study coauthors Dr. Kazuki Yokouchi and Dr. Yuuki Kawabata ...
If it forms a dent and returns to normal after pressing, then your fish is fresh and good. Another way of identifying a fresh fish is by checking its gills. A fresh fish’s gills will be red in colour.