Science Codex | Scientists discover the mechanism of heart failure in fish exposed to oil spills Science Codex Scientists discover the mechanism of heart failure in fish exposed to oil spills. Posted By News On February 14, 2014 - 2:30pm. Tweet. Scientists discover the mechanism of heart failure in fish exposed to oil spills. Think of an oil spill, and images ... Scientists Discover the Underlying Mechanism of Heart Failure in Fish Exposed ... Scientists discover mechanism of crude oil heart toxicity |