In “Fish Functions” add the following to the paragraph starting “To resolve Fish Identification”

Additionally, after resolving all the strings submitted for a given Fish Identification, if any of the strings submitted were Fish with the same name of as the Big One, the Elder Judge should perform the Big One Caught atomic action, using the Fishing Contestant who submitted the currently processed Fish Identification as the Hero, as part of resolving the Fish Identification action as a whole

In “Trophies” replace “If a Fishing Contestant submits a string as part of a Fish Identification that exactly matches the Big One, then as an atomic action the Elder Judge should take the following steps:” with

Big One Caught is an atomic action that may only be performed by the Elder Judge, and only when allowed elsewhere by the rules. When performed, a specific Fishing Contestant must be marked as the Hero in order to perform it. It has the following steps

Add the following step as the second to last step in the Big One Caught atomic action:

Fail all unresolved Fish Identification (not counting the one currently being resolved) actions, refunding the Fishing Contestant trying to perform the action any catches and energy they spent to perform it

In the same list, replace “Increase that Fishing Contestant’s Trophies by 1.”

with “Increase the Hero’s Trophies by 1.”