Biologists with the Kentucky Department of Fish and Wildlife Resources say they’ve made a major breakthrough in efforts to grow bigger largemouth bass in the Commonwealth.
Researchers, working alongside the Center for Aquaculture Technologies, have identified specific genetic markers linked to larger size in native largemouth bass—marking what officials call a first-of-its-kind discovery.
The finding comes through the agency’s Thoroughbred Bass Program, which aims to selectively breed Kentucky-raised bass with stronger growth potential and eventually stock them in public waters.
Biologists say the approach could provide a long-sought alternative to stocking non-native Florida bass, which haven’t performed well in colder climates like Kentucky.
The research involved genetic testing on 300 bass from lakes across the state, comparing trophy-sized fish to smaller, slow-growing ones and analyzing millions of genetic markers.
Officials say the program could lead to long-term improvements in bass populations by introducing stronger growth genetics into the wild over time—while preserving Kentucky’s native fish.
However, the first round of selectively bred “Thoroughbred Bass” has been delayed until at least 2027 due to timing issues with required genetic screening tools.
In the meantime, biologists will continue collecting and testing fish statewide to prepare for future production.
