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The Decorator Crab Trivia Quiz

See if you know some general information about this crazy crustacean.

A multiple-choice quiz by Panzera74. Estimated time: 5 mins.

Author
Panzera74

Time
5 mins

Type
Multiple Choice

Quiz #
248,839

Updated
Dec 03 21

# Qns
10

Difficulty
Tough

Avg Score
6 / 10

Plays
778

One at a Time - Single Page - Timed Game

Question 1 of 10

1. What is the scientific name of the decorator crab? Hint

Mictyris platycheles

Plagusia chabrus

Oregonia gracilis

Ovalipes australiensis

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Question 2 of 10

2. The decorator crab diet includes which of the following? Hint

Algae

Small crustaceans

Sponges

All of these

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Question 3 of 10

3. The decorator crab has alternating colored bands on its legs. What color are these bands? Hint

Yellow and red

Red and white

Black and white

Blue and white

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Question 4 of 10

4. The decorator crab is known for its habit of adorning itself with bits of seaweed, hydroids, sponges and other intertidal debris. How is this accomplished? Hint

By turning ocean sand into a sticky glue-like substance

Using the oils from fish

Using a glue-like substance that is secreted from the mouth

Using an oily substance produced from the crabs tear ducts

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Question 5 of 10

5. The decorator crab can be found in what type of habitat? Hint

Usually in or around schools of fish

Among coral reefs

Usually among seaweed in intertidal zones, and in subtidal waters

In freshwater lakes and streams

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Question 6 of 10

6. Another popular name the decorator crab goes by is? Hint

Sponge crab

Rough shore crab

Oval spider crab

Graceful decorator crab

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Question 7 of 10

7. There are many types of crabs, but which of these is a relative of the decorator crab? Hint

All of these

Sheep crabs

Kelp crabs

Dungeness crabs

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Question 8 of 10

8. The decorator crab falls into which family of crab? Hint

Grapsidae (shore crabs)

Portunidae (swimming crabs)

Majidae (spider crabs)

Cancridae (edible crabs)

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Question 9 of 10

9. The decorator crab must molt as it grows larger.

True

False

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Question 10 of 10

10. Decorator crabs are an important food source for which of these fish species? Hint

Tuna and sturgeon

Whales

Croakers and cabezon

Sharks

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Quiz Answer Key and Fun Facts

1. What is the scientific name of the decorator crab?

Answer: Oregonia gracilis

The scientific name comes from the Greek word "Orego" which means to stretch or reach, and the Latin word, "Gracilis" meaning slender, thin or simple. Plagusia chabrus is the scientific name for the red rock crab. Ovalipes australiensis is the scientific name for the sand crab and Mictyris platycheles which is the scientific name for the soldier crab.

2. The decorator crab diet includes which of the following?

Answer: All of these

Although considered a carnivore, the decorator crab is known to consume algae and sponges making it more of an omnivore.

3. The decorator crab has alternating colored bands on its legs. What color are these bands?

Answer: Black and white

The alternate black and white bands on its legs distinguish the decorator crab from other, similar species.

4. The decorator crab is known for its habit of adorning itself with bits of seaweed, hydroids, sponges and other intertidal debris. How is this accomplished?

Answer: Using a glue-like substance that is secreted from the mouth

The camouflage is placed on hook shaped hairs on the carapace using a glue-like substance that is secreted through the crab's mouth.

5. The decorator crab can be found in what type of habitat?

Answer: Usually among seaweed in intertidal zones, and in subtidal waters

The decorator crab can be found in subtidal waters up to a depth of 1,439 feet.

6. Another popular name the decorator crab goes by is?

Answer: Graceful decorator crab

The decorator crab is also known as the graceful decorator crab due to its graceful nature and surprising ability to use its surroundings to blend in.

7. There are many types of crabs, but which of these is a relative of the decorator crab?

Answer: All of these

All of these crabs fall into the same family as the decorator crab.

8. The decorator crab falls into which family of crab?

Answer: Majidae (spider crabs)

The decorator crab falls into the spider crab family just as its relatives like the kelp crab, sheep crab and dungeness crab do.

9. The decorator crab must molt as it grows larger.

Answer: True

A crab's shell doesn't grow, but the crab does. To solve this dilemma, a crab must molt as it grows larger.

10. Decorator crabs are an important food source for which of these fish species?

Answer: Croakers and cabezon

The croaker and cabezon diet includes shrimp, crabs, and detritus (dead and decomposing plant and animal matter).

Source: Author Panzera74

This quiz was reviewed by FunTrivia editor crisw before going online.
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