Despite their similar appearances, barracudas and wahoo actually belong to two completely different fish families. The barracuda is the more fearsome-looking of the two and has big, fang-like teeth, while the wahoo only has small needle-like ones. The wahoo also has a much longer dorsal fin.
Barracuda teeth are both very sharp and plentiful, as this fish actually has two sets of teeth. One outer row of smaller, very sharp teeth, and one inner row of larger teeth. In total, barracuda can have up to 200 teeth. With them, they can bite, tear, and pierce through both flesh and bone.