"65 Days in Baja: The Search for One of the Rarest Fish on Earth" sounds like an incredible adventure documentary or expedition log. Here's what it might entail:

The Premise:

A team of scientists, conservationists, and filmmakers embarks on a grueling 65-day expedition through Mexico's Baja California Peninsula in search of one of the rarest fish on Earth—possibly the Devil's Hole pupfish (Cyprinodon diabolis), the Vaquita (Phocoena sinus), or another critically endangered species endemic to the region.
Possible Candidates for the "Rarest Fish":

Devil's Hole Pupfish (Cyprinodon diabolis) – One of the world's most endangered fish, surviving in a single geothermal pool in Death Valley (though technically in Nevada, Baja has similar species).
Totoaba (Totoaba macdonaldi) – A large, critically endangered fish hunted for its swim bladder (linked to the Vaquita's decline due to bycatch).
Vaquita (Phocoena sinus) – The world's smallest and rarest porpoise (not a fish, but often the focus of Baja conservation efforts).
Baja California Killifish (Fundulus lima) – A rare desert fish found only in a few isolated oases.

Expedition Challenges:

Harsh Environment: Baja's deserts, rugged coastlines, and extreme temperatures.
Illegal Fishing & Poaching: If searching for totoaba or vaquita, they must avoid dangerous cartel-run wildlife trafficking operations.
Scientific Obstacles: Finding a species with only a handful of individuals left in the wild.
Cultural & Political Barriers: Navigating local communities, permits, and conservation laws.

Possible Outcomes:

Discovery: A miraculous sighting of the species, proving it still exists.
Heartbreak: Finding evidence of extinction (like the vaquita's near-disappearance).
Conservation Impact: Rallying global support to save the species.

Real-Life Parallels:

Similar to The Cove (2009) but focused on Baja’s marine life.
Resembles expeditions for the coelacanth or megamouth shark—elusive species that captivate scientists.

Would you like this as a documentary pitch, a fictional story, or details on real-life Baja conservation efforts? I can refine the focus based on your interest!