Drs. Clare Wormald and Mia Adreani have just finished teaching the Biology and Ecology of Fishes class.
We, along with the Three Seas students, had some great opportunities to study a diversity of fishes on the reefs around the Smithsonian Tropical Research Institute at Bocas del Toro. We observed a variety of behaviors, like territoriality, mating systems, feeding and swimming behaviors of coral reef fishes and studied ecological processes, including the recent lionfish invasion, and the interaction of fishes and their habitats which include coral reefs and the locally abundant mangrove systems. 
Here the students are speeding back from a dive studying the mating systems of a simultaneous hermaphrodite, the hamlet (Hypoplectrus sp.). Around dusk, hamlets pair up and engage in "egg trading", taking turns in both the female and male roles during their spawning bouts. Here's a short video clip of the spawning behavior.
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