Betta fish are also known as Siamese fighting fish.They flare their gills when they are ready to fight. This makes them appear larger since fish do not have very good eyesight. They also fan their gills when they are trying to court a female Betta. ... Bettas are one of the few fish that can get air from above the water.
natural selection light water and carbon dioxide
the branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms.
As far as I remember, a joint held together by fibrocartilage would be classified as a <span>cartilaginous </span>joint.
