Advanced Oceanic Species Challenge

A rigorous test of knowledge on fish and marine organisms.

bioluminescencedeep seaconservationmarine ecologyocean predatorsfish identification
Difficulty:HARD

Quiz Details

Questions6
CategoryAnimals & Wildlife
DifficultyHARD
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Quiz Questions

Answer all questions below and test your knowledge.

  1. 1

    Which species holds the record for the deepest confirmed fish habitat, found near the Mariana Trench?

    Question 1
  2. 2

    Which small deep‑sea fish uses rows of photophores along its belly to counter‑illuminate against downwelling light?

    Question 2
  3. 3

    Identify the largest extant bony fish, reaching lengths over five meters.

    Question 3
  4. 4

    Which reef fish is famed for removing parasites from larger marine animals, often establishing ‘cleaning stations’?

    Question 4
  5. 5

    Which amphibious fish can spend up to three weeks on land by breathing through its skin and mouth lining?

    Question 5
  6. 6

    Which reef fish species is protandrous, beginning life as male and later transforming into female?

    Question 6

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