NEW SPECIES: a potentially new species of head-and-taillight tetra (Hemigrammus aff. ocellifer), closely related to a fish much appreciated by aquarium enthusiasts. This is just one of eleven new fish species discovered on the expedition, including a South American darter and a three-barbeled catfish. Fish were diverse and plentiful at the study sites, including many large fishes that are an important source of food for local people.

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