Fish

To be a fish, an animal must fulfill the following, except ...

• have a backbone

• live in water

• use trachea to absorb oxygen

Clownfish chase away the fish that wants to eat the anemone.

• true

• false

Clownfish are real fish because ...

• they have backbones

• they live in the water

• they have gills

Seahorses live in ...

(a)  

Seahorses are fish.

• true

• false

Starfish are invertebrates.

• true

• false

Sharks' skeletons are made of ...

(a)  

... are not fish.

• seahorses

• penguins

• sharks

Jellyfish have eyes.

• true

• false

Dolphins eat the following, except ...

• eels

• squids

• shrimps

• sharks