ZOO 180 1st Exam Reviewer: Introduction to Ichthyology

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Questions and Answers

Which of the following is NOT a characteristic of fish?

  • Presence of gills for respiration
  • Aquatic
  • Vertebrates
  • Endothermic (correct)

What is a defining feature of fish for respiration?

  • Skin respiration
  • Tracheae
  • Lungs
  • Presence of gills (correct)

Which country is known to have the smallest fish species called Paedocypris progenetica?

  • Indonesia (correct)
  • Thailand
  • Philippines
  • India

In what year was it mentioned that there are approximately 35,000 species of fish described?

<p>2024 (B)</p> Signup and view all the answers

What term describes the ability of fish to regulate their body temperature based on their environment?

<p>Ectothermic (A)</p> Signup and view all the answers

What is the term used to describe the presence of gills in fish for respiration?

<p>Ectothermic (B)</p> Signup and view all the answers

Which of the following is NOT a characteristic of most fish species?

<p>Endothermic metabolism (C)</p> Signup and view all the answers

What is the term used to describe thin dermal plates found on fish and can be absent in some species?

<p>Scutes (C)</p> Signup and view all the answers

Which region was mentioned as the center of marine shore fish biodiversity?

<p>Indonesia (D)</p> Signup and view all the answers

How many species of fish were described as of 2024?

<p>35,000 (D)</p> Signup and view all the answers

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Study Notes

Characteristics of Fish

  • Warm-bloodedness is NOT a characteristic of fish
  • The defining feature of fish for respiration is the presence of gills
  • Most fish species do not have the ability to regulate their body temperature based on their environment

Fish Species and Biodiversity

  • Paedocypris progenetica, the smallest fish species, is found in Indonesia
  • As of a certain year, there are approximately 35,000 described species of fish
  • The center of marine shore fish biodiversity is the Indo-Pacific region
  • As of 2024, there are approximately 35,000 species of fish

Fish Anatomy

  • The term used to describe the presence of gills in fish for respiration is branchial respiration
  • Scales are thin dermal plates found on fish and can be absent in some species

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