Fishes

Sawfish “Virgin Birth” Discovery

“Life, uh, finds a way.” Any Field Museum fan worth their salt probably remembers the scene in Jurassic Park where Jeff Goldblum’s character explains that even though all the dinosaurs in the park are female, they might still find a way to reproduce. But this isn’t science fiction—Field Museum scientists have recently helped discover that smalltooth sawfish, critically endangered shark relatives, sometimes reproduce through “virgin birth.”

Fishes goes to Guatemala - Follow us in the field!

Next week our staff in Fishes at The Field Museum will be leaving the cold, snowy days of Chicago to study neotropical fishes in the Central American country of Guatemala!  The Field Museum has always been an important institution for studying the biodiversity of fishes in the tropical rainforests of Mexico, Central America, and South America.  On this expedition our Fishes staff will continue to build on our fish collections from the region so that we can answer even more questions.

Video: Leo on Bioluminescence

Beyond the reach of sunlight, thousands of feet below the surface of the ocean, some creatures create their own light known as "bioluminescence." Take a trip through the mind of Leo Smith, who asks questions about deep sea fish evolution. Patterns in diversity can offer clues to why fish have evolved so many ways of brightening up the deep sea. Some seem to use light to blend into their surroundings, others to lure prey out of the surroundings, or even to attract mates.

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