Hydrilla Consumption by Triploid Grass Carp
Triploid grass carp (Ctenopharyngodon idella, 2n = 72) were found to consume an average of 127 ± 17% of their body weight in fresh hydrilla (Hydrilla verticillata) per day. Experimental fish were 199 ± 27 g at the outset, and during the 51-day trial, the 6 fish gained an average of 3.3 ± 0.5 g/ day. Total lengths increased from 243 ± 10 mm to 301 ± 15 mm (1.1 ± 0.2 mm/day) during this time. These values are equivalent to results reported by other researchers for diploid grass carp and are 3 to 4 times greater than for triploid hybrid grass carp (C. idella X Hypophthalmichthys nobilis, 2n...
