4 normal and 4 forebrain-ablated fish were food-reinforced for correct choice in a circle-square discrimination task; both groups readily learned the task. When the fish were tested after 8 days of a practice-free retention interval, both groups performed equally well and at the same level as their earlier asymptote. The results of this study indicate that long-term memory function of teleosts is not affected by forebrain ablation.
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