Fiddler Crab Quiz

Fiddler crabs breathe with ______________.

• lungs
• gills
• lungs and gills
• they don't breathe

A fiddler crab is a crustacean. Crustaceans are invertebrates which means they have ________.

• a backbone
• no backbone
• a head
• a headache

The fiddler crab with one large claw and one small claw is the 

• male
• female

Crabs are 

• cold-blooded
• warm-blooded

Crabs live

• in water all of the time
• part time on land and part time on water
• on land all of the time

When do fiddler crabs feed?

• any time
• at high tide
• at low tide

Fiddler crabs eat

• algae and dead fish
• everything
• plants

Fiddler crabs hide among marsh plants and dig holes to live in. What are the holes called?

• crab holes
• burrows
• nests
• marsh plants

The male fiddler crab uses his  large claw 

• to eat
• to attract females and defend territory
• to scoop up mud

What happens if a large claw breaks off?

• the same size claw grows in the same place
• its other claw becomes a large claw
• nothing