If you catch another one and you don't want to kill it, take a few scales to your local Fish and Game office. Their biologist should be able to tell you what it is

15 hours ago, JEVSonar said:

 This is why it's important to know the difference. Your pic is not the best however, that is a spotted bass.

 

OP hasn't been on the site in over 2 years, I doubt he's still searching for an answer to this 3+ year old post. 

The hairy legs are a dead giveaway, it's a largemouth.

The state Conservation dept. could have stocked a few spots to see how they hold up in different bodies of water. Missouri does this every so often.