Advanced Oceanic Species Challenge
A rigorous test of knowledge on fish and marine organisms.
bioluminescencedeep seaconservationmarine ecologyocean predatorsfish identification
Difficulty:HARD
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Quiz Questions
Answer all questions below and test your knowledge.
- 1
Which species holds the record for the deepest confirmed fish habitat, found near the Mariana Trench?
- 2
Which small deep‑sea fish uses rows of photophores along its belly to counter‑illuminate against downwelling light?
- 3
Identify the largest extant bony fish, reaching lengths over five meters.
- 4
Which reef fish is famed for removing parasites from larger marine animals, often establishing ‘cleaning stations’?
- 5
Which amphibious fish can spend up to three weeks on land by breathing through its skin and mouth lining?
- 6
Which reef fish species is protandrous, beginning life as male and later transforming into female?
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