The Conversation U.S. on Nostr: Biologists monitoring Missouri streams uncovered a mystery: Bleeding shiner fish in ...

Biologists monitoring Missouri streams uncovered a mystery: Bleeding shiner fish in the northern Ozarks showed signs of ancient hybridization with another species, while identical-looking fish farther south did not. The answer may lie in the region’s geologic past.
https://theconversation.com/fish-dna-in-ozark-streams-reveals-regions-complex-geologic-history-289351