I Speak for the Fish: Playing follow-the-leader with diving ducks
A team of ducks leads us to where the invasive round gobies are overwintering and along the way schools us in how to find fish underwater.

I Speak for the Fish: Courting Sunfish
Sunfish offer a special opportunity for people, particularly families with children, to develop a lifelong love affair with nature and fish — no worm required.

I Speak for the Fish: And the survey says…
Doom and gloom coverage of the Great Lakes’ underwater realm has unfairly skewed the public’s perception.

I Speak for the Fish: Favorite fish books
A short, curated list of books that have in one way or another influenced my career.

I Speak for the Fish: These catfish have something to say
Northern madtom are an indicator species. What does it mean to be an indicator species? What can the tiny catfish tell us? And who, if anyone, is listening?

I Speak for the Fish: Water snakes are spooktacular
Fear of the natural world is often amplified underwater, and water snakes in particular are one of the species that can intimidate even the bravest of souls.

I Speak for the Fish: A Fish’s Shelf Life
A private tour of the Royal Ontario Museum’s fish collection with its 1.5 million specimens, representing 7,500 species preserved in 110,000 jars.

I Speak for the Fish: A jarring look at gizzard shad
In years past, acres of shad could be seen schooling just beneath Lake Erie’s surface. These days, schools large enough to block out the sun are a rare sight.

I Speak for the Fish: Taking the measure of a rainbow darter
The rainbow darter is a tiny freshwater fish. Scale for scale, it’s as flamboyant as many colorful species living among coral reefs.

I Speak for the Fish: Not all lampreys are killers, but all are paying the price for their reputation
Native lamprey species in the Great Lakes generally get reviled by association with sea lamprey even though they don’t normally kill their host fish.

I Speak for the Fish: Inside a trout feeding frenzy
Gilboa Quarry is a popular Midwest dive destination with underwater attractions that include a helicopter, a plane and an aggressive school of rainbow trout.

I Speak for the Fish: How the round goby changed the Great Lakes, twice
In this month’s column, Kathy Johnson looks at how, when and where round goby were first identified in the Great Lakes.

I Speak for the Fish: Playing peek-a-boo with the ducks
An intuitive distrust of scuba divers reflects a key survival strategy of ducks and other waterfowl.