I realized later that one I caught was actually a sucker (good thing I released him!).
Why? There are no special regulations on the Jordan River. You can't keep June Suckers from anywhere, and you can't keep any suckers from Utah Lake and it's TRIBUTARIES. The Jordan River is NOT a tributary of Utah Lake. You can keep common suckers from the Jordan River. Just be sure you know the difference between June Suckers and common suckers.
"I tolerate with the utmost latitude the right of others to differ from me in opinion."
— Thomas Jefferson
"The difference between genius and stupidity is; genius has its limits."
— Albert Einstein