EPA EcoTox TARGET Challenge
https://www.epa.gov/innovation/ecotox-target-challenge
You must be registered for the challenge by March 16, 2020 to participate
Challenge End Date (submissions due): June 14, 2021.

This challenge calls for respondents to develop high quality, low cost, technologies/platforms for evaluating global gene expression in samples from four common aquatic toxicity test organisms: Pimephales promelas (a fish), Daphnia magna (a crustacean), Chironomous dilutus (an insect; formerly Chironomous tentans), and Raphidocelis subcapitata (a green algae). These represent the species and associated trophic levels most frequently tested when evaluating the ecological hazards of chemicals.