 The electric eel, Electrophorus electricus, is perhaps the most well-known gymnotiform fish. Photo by Brian Gratwicke. New paper out this week led by the multi-talented Fernando Alda. In this paper we look at a very hard problem in phylogenetics: how to accurately determine relationships in groups that rapidly diverged a long time ago. These short branch lengths at deeper nodes in the tree cause a variety of problems when analyzing even the largest genomic datasets. In this paper we used several different filtering methods and recover a novel relationship for gymnotiform fishes (weakly electric knife fishes found in the Neotropics). If you're interested take a look over at the Systematic Biology website and let me know what you think!
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