Compares the fishes from the tropical seas to those in the cold ocean. Interest Level: 3-6 Reading Level: 6.5 ATOS Book Level: 6.4 AR Interest Level: MG AR Points: 1 AR Quiz: 152524EN Reading Counts Level: 10.4 Reading Counts Points: 4 Lexile Measure: 1100 Lexile Code: IG (Illustrated Guide).