The brook trout produces hybrids both with its congeners Salvelinus namaycush and Salvelinus alpinus, and intergeneric hybrids with Salmo trutta.

The splake is an intrageneric hybrid between the brook trout and lake trout (S. namaycush).
Although uncommon in nature, they are artificially propagated in substantial numbers for stocking into brook trout or lake trout habitats.
Although they are fertile, back-crossing in nature is behaviorally problematic and very little natural reproduction occurs.
Splake grow more quickly than brook trout and become piscivorous sooner and are more tolerant of competitors than brook trout.

The tiger trout is an intergeneric hybrid between the brook trout and the Eurasian brown trout (Salmo trutta).
Tiger trout occur very rarely naturally, but are sometimes artificially propagated.
Such crosses are almost always reproductively sterile.
They are popular with many fish-stocking programs because they can grow quickly, and may help keep coarse fish (wild non "sport" fish) populations in check due to their highly piscivorous (fish-eating) nature.

The sparctic char is an intrageneric hybrid between the brook trout and the Arctic char (S. alpinus).
The brook trout produces hybrids both with its congeners Salvelinus namaycush and Salvelinus alpinus, and intergeneric hybrids with Salmo trutta.
The splake is an intrageneric hybrid between the brook trout and lake trout (S. namaycush). Although uncommon in nature, they are artificially propagated in substantial numbers for stocking into brook trout or lake trout habitats. Although they are fertile, back-crossing in nature is behaviorally problematic and very little natural reproduction occurs. Splake grow more quickly than brook trout and become piscivorous sooner and are more tolerant of competitors than brook trout.
The tiger trout is an intergeneric hybrid between the brook trout and the Eurasian brown trout (Salmo trutta). Tiger trout occur very rarely naturally, but are sometimes artificially propagated. Such crosses are almost always reproductively sterile. They are popular with many fish-stocking programs because they can grow quickly, and may help keep coarse fish (wild non "sport" fish) populations in check due to their highly piscivorous (fish-eating) nature.
The sparctic char is an intrageneric hybrid between the brook trout and the Arctic char (S. alpinus).
Brook trout