Comparisons (one-way ANOVA’s) (Zar, 1999) were done using all individual weights from each replicate in each density tested. If during that period no differences were found in the three replicates of each density, all weights of the three replicates were gathered and Student’s t-tests (Zar, 1999) were used to compare weights of all individuals in the two densities. Feeding Rate (% bw d 1) (FR) was calculated for every weighing period using the expression (FI/Average W(t))*100, where FI is the food ingested and average W(t) is the average wet weight of the cuttlefish during the time period (t).