Results show that specific growth rates of triploid
hybrids, control hybrids and triploid rainbow trout,
raised separately, are about equal after the ¢rst feeding.
Growth of hybrids was found to be higher than
for rainbow trout controls between days 110 and
200. Once breeding problems are worked out, these
hybrids may be useful in culture as they show heterosis
for growth rate and are superior to rainbow trout
and Black Sea trout. An increased growth rate was
reported in the sunshine bass, a cross between the
white bass (Morone chrysops) and the striped bass
(M. saxatilis) (Smith 1988); Crosses of the silver
carp bighead carp (Hypophthalmichthys molitrix
Aristichthys nobilis) (Krasnai 1987); black crappie
white crappie (Pomoxis nigromaculatus Pomoxis annularis)
(Hooe, Buck & Wahl 1994); catfish hybrids between
the African catfsh (Clarias gariepinus),
Results show that specific growth rates of triploid
hybrids, control hybrids and triploid rainbow trout,
raised separately, are about equal after the ¢rst feeding.
Growth of hybrids was found to be higher than
for rainbow trout controls between days 110 and
200. Once breeding problems are worked out, these
hybrids may be useful in culture as they show heterosis
for growth rate and are superior to rainbow trout
and Black Sea trout. An increased growth rate was
reported in the sunshine bass, a cross between the
white bass (Morone chrysops) and the striped bass
(M. saxatilis) (Smith 1988); Crosses of the silver
carp bighead carp (Hypophthalmichthys molitrix
Aristichthys nobilis) (Krasnai 1987); black crappie
white crappie (Pomoxis nigromaculatus Pomoxis annularis)
(Hooe, Buck & Wahl 1994); catfish hybrids between
the African catfsh (Clarias gariepinus),
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