Document Type

Curriculum Material

Publication Date


First page number:


Last page number:



In “Finicky Fish Finish…Last!” students explore what has happened to the Colorado River and the reasons why it is so difficult for the razorback sucker to thrive in a changed environment. Working as ichthyologists (fish biologists) at Lake Mead, students collect water quality data such as temperature, pH, and clarity -- to determine whether current habitat conditions are sufficient for survival of young razorback suckers. Students observe and identify non-native fish in Lake Mead as they learn how the razorback sucker interacts with these neighbors. Students assess whether Lake Mead is still a good habitat for razorback suckers. Using the knowledge they’ve gained, students design ideal refuges for the razorback sucker, including ideas to get the word out about this endangered native fish.


Ecology – Study and teaching (Elementary); Introduced fishes – Study and teaching (Elementary); Rare fishes – Study and teaching (Elementary); Razorback sucker; Teaching – Aids and devices; United States – Lake Mead


Curriculum and Instruction | Curriculum and Social Inquiry | Environmental Indicators and Impact Assessment | Natural Resources and Conservation | Science and Mathematics Education




2008/2009 Edition

Incomplete paper data