Electric Fish and Their Abilities

The video explores the fascinating world of electric fish, starting with a historical account by Alexander von Humboldt. It explains how electric fish use electricity for communication, navigation, and hunting. The video categorizes these fish into weakly and strongly electric groups, detailing their unique anatomical structures and functions. It highlights the electric eel's powerful hunting strategy and discusses the mystery of how these fish avoid self-electrocution.

Who was the explorer that reported witnessing electric eels leaping out of the water?

• James Cook

• Christopher Columbus

• Alexander von Humboldt

• Charles Darwin

What is the primary function of electrical signals in weakly electric fish?

• To attack prey

• To communicate and navigate

• To generate light

• To regulate body temperature

What are the specialized cells called that help weakly electric fish generate electricity?

• Osteocytes

• Photoreceptors

• Electrocytes

• Neurons

Which fish has a schnauzenorgan that helps it detect signals from other fish?

• Electric ray

• Electric catfish

• Peter’s elephantnose fish

• Electric eel

What is the role of electroreceptors in electric fish?

• To protect from predators

• To generate electricity

• To sense electrical fields

• To store energy

What is the maximum voltage an electric eel can produce during its attack?

• 600 volts

• 350 volts

• 220 volts

• 100 volts

Which of the following is NOT a strongly electric fish?

• Electric catfish

• Peter’s elephantnose fish

• Electric eel

• Electric ray

How do electric eels use their electric fields during hunting?

• To illuminate their surroundings

• To communicate with other eels

• To incapacitate prey

• To attract mates

Which fish can produce up to 350 volts with its electric organ?

• Peter’s elephantnose fish

• Electric ray

• Electric catfish

• Electric eel

What is one theory about why electric fish do not electrocute themselves?

• They have insulating scales

• They only produce low voltage

• They discharge electricity into the water

• Their size allows them to withstand shocks