study guide

Question 1

fish habitat

Answer 1

• 41% freshwater – why so many?
• 1% diadromous
• 58% saltwater
  – 44% in shallow water near continents
  – 1% lighted open ocean (epipelagic)
  – 5% unlighted open ocean (deepwater pelagic)
  – 7% ocean bottom (deepwater benthic)
• Highest diversity in the tropics
• Virtually all aquatic environments
  Note that ~ 86% of all fish species are found
  on or near continents