How to Catch a Bird… If You’re a Fish

The video discusses how fish, particularly tigerfish, interact with birds. While most fish eat birds accidentally, tigerfish in South Africa actively hunt swallows using two tactics: lunging from deep water and surface pursuit. The success of these tactics is influenced by the refraction of light in water. Due to an artificial lake environment, tigerfish have adapted to include birds in their diet, which poses ecological risks. Researchers are concerned about the impact on both tigerfish and swallow populations and call for further study.

What is the primary way most fish end up eating birds?

• By being fed by humans

• By scavenging dead birds

• By catching them accidentally

• By actively hunting them

How do tigerfish primarily catch birds in the South African lake?

• By leaping from the water to catch them mid-flight

• By using their fins to create waves

• By waiting for birds to land on the water

• By trapping them in underwater nets

What challenge do tigerfish face when hunting birds due to light refraction?

• Birds appear larger than they are

• Birds appear closer than they are

• Birds appear distorted and shifted

• Birds appear faster than they are

Why do tigerfish in the artificial lake resort to hunting birds?

• They are avoiding predators in the water

• They have evolved to prefer bird meat

• They are trained by researchers

• Their usual prey is scarce in the lake

What potential risk does the bird-hunting behavior of tigerfish pose?

• It could lead to a decrease in fish diversity

• It could lead to a decrease in swallow population

• It could lead to an increase in eagle population

• It could lead to a decrease in tigerfish population