Quiz Maker

QUIZ: Fish Facts

Test your wildlife knowledge with our quiz all about FISH!

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1 / 8

1. What is the world’s largest species of fish?

Giant grouper

Mola mola (ocean sunfish)

Great white shark

Whale shark

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2. The coelacanth, once thought extinct, was rediscovered in 1938. To which group of fish does it belong?

Ray-finned fishes (Actinopterygii)

Lobe-finned fishes (Sarcopterygii)

Cartilaginous fishes (Chondrichthyes)

Jawless fishes (Agnatha)

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3. Which fish has the highest brain-to-body weight ratio among all vertebrates?

Cleaner wrasse

Electric ray

Clownfish

Elephantnose fish

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4. Many deep-sea anglerfish exhibit “sexual parasitism.” What does this mean?

Tiny males permanently fuse with females for reproduction

The female absorbs nutrients from males she eats after mating

Both sexes parasitise other fish during courtship

Females steal eggs from other species to hatch as their own

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5. Which fish can survive out of water for several days, even travelling short distances on land?

Mudskipper

Walking catfish

Lungfish

All of the above

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6. Pelagic fish live mainly:

On the seabed near reefs

In open water away from shore and bottom

Only beside coral reefs

Only in estuaries

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7. Roughly what share of known fish species live in the marine pelagic environment?

Less than 2%

7%

11%

35%

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8. True or False: Red-coloured fish in the mesopelagic are effectively invisible.

True

False

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