Who Voices the Fish in the New Cat in the Hat? Cast Reveal and Trailer Secrets

Wondering about Who Voices the Fish in the New Cat in the Hat? Cast Reveal and Trailer Secrets? Read key insights in our full report.

The fish cannot operate in a vacuum. His entire existence depends on his friction with the household around him. In the 2026 film, that ecosystem features a voice roster including Xochitl Gomez, Quinta Brunson, and Matt Berry, setting up a rich comedic soundscape.

When Thing One and Thing Two erupt from their box, the film treats them not merely as silent agents of destruction, but as physical forces tearing the living room apart. Conrad and Sally are caught between the thrill of forbidden play and the terror of maternal retribution.

Here, the fish acts as an alarm bell that refuses to stop ringing:

• The Voice of Immediate Consequence: While the children hesitate, the fish screams the unvarnished truth about property damage and broken rules.
• Trapped in a mobile, breakable sphere of water, every physical stunt places the character in genuine, comedic peril.
• The Counterweight to the Cat: Bill Hader's trickster character represents unbridled ego and indulgence; Yang's fish represents strict superego constraints.

The dynamic mirrors classic vaudeville. Without the fish shouting from a floating teapot or clinging to the rim of an airborne lamp, the Cat’s destructive games would carry zero tension. The stakes of the entire movie rest in that tiny glass container.