Coral trout seem to be as good as chimpanzees at knowing when to collaborate. When hunting for food, the trout team with moray eels, which flush tiny fish snacks out of coral crevices if there’s nothing appetizing in the open water. The trout are able to determine which eel is a better hunting partner and select that one for finding food in the future, researchers report September 8 in Current Biology. The results support the idea that a relatively small brain does not prevent some fish from being able to comprehend information as effectively as apes do in situations relevant to their watery habitats, the authors write.