Smaller version of the same fish, quite the set of teeth.Behaviour
"Tigerfish can be considered Africa's equivalent of the South American piranha, though they belong to a completely different family. They gain this reputation as the former are famous for their ferocity when hunting. They have razor-sharp teeth which are inter-locking, together with their streamlined, muscular body built for speed, the tigerfish are aggressive predators. They have a gas-filled sac in their body, which they use as a sound receiver. This transmits vibrations from the water, enabling them to detect any animals nearby and respond accordingly. A school of juveniles can tackle animal of almost any size, including any land animals that stray too close to the water edge. Adults tend to travel in smaller groups of four to five, but they are no less dangerous. Even an individual can take down prey as large as itself. When food is scarce or the competition for food is too great, tigerfish may resort to cannibalism. This is particularly common in the dry season. Tigerfish have also been known to attack humans, mistaking a body part for a food source. These attacks can be devastating due to the sharp teeth and aggressive hunting tactics used by the Tigerfish."