Fish quiz
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What does the biggest living fish mainly eat?
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More questions about Fish
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What fish can Japanese chefs serve only with a special license?
Answer: Pufferfish
Why: Pufferfish build up their poison, tetrodotoxin, by eating animals that carry toxin-laden bacteria.
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Where do European eels swim to breed?
Answer: Sargasso Sea
Why: Their tiny larvae then ride the Gulf Stream back toward Europe, turning into see-through glass eels near the coast.
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What kind of fish is the electric eel?
Answer: Knifefish
Why: Like other knifefish, it swims by rippling a long fin that runs along the underside of its body.
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How do Antarctic fish survive in seawater colder than 0 °C?
Answer: Antifreeze proteins
Why: These proteins latch onto tiny ice crystals inside the fish and stop them from growing.
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Whose venom is the deadliest of any fish?
Answer: Stonefish
Why: Pufferfish are poisonous only when eaten, while stonefish inject venom through sharp spines on their back.
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What living fish is most closely related to us?
Answer: Lungfish
Why: Genome studies place lungfish closer to land vertebrates than the coelacanth, the other living lobe-finned fish.
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