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Q. Consider the following organisms:
  1. Starfish
  2. Dogfish
  3. Whales
  4. Gambusia
Which of the above are true fish?
Answer: Only 2 and 4
Notes: Starfish is an echinoderm and not a fish. Dogfish and Gambusia are both true fish belonging to the class Chondrichthyes and Actinopterygii respectively. Whales, though aquatic, are mammals belonging to the order Cetacea and are not fish. Thus, only Dogfish and Gambusia are true fish among the given options.
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📌 Question Number: 15 in 102: Biological Classification in the above course in App.