triploidy and
monosex (all-female) production. Triploid females
do not produce ovaries and generally do
outperform diploid fish if the intent is to rear them
past the normal size or season of reproduction.
Triploid, all-female stocks have proven to produce a
faster growing, more uniform product in many such
situations. Reports of lower tolerance of triploids to
stressors in production conditions have surfaced,
but are highly variable and often not substantiated
with true controls.