arteries to air-bladder, [337];
sounds, [362];
habits and food, [482];
breeding, [483];
P. bichir, [482];
P. congicus, [290];
P. lapradei, [483];
Polyrhizodus, [446]
arteries to air-bladder, [337];
sounds, [362];
habits and food, [482];
breeding, [483];
P. bichir, [482];
P. congicus, [290];
P. lapradei, [483];
Polyrhizodus, [446]