“The difference is, our fish are perfectly happy.” “How do you know they’re happy?” I ask, noting that the mat of tilapia in the tank looks thick enough for St. Peter to walk on.

In their paper published in Proceedings of the National Academy of Sciences, the group describes how they put Nile tilapia, a type of fish, in tanks with a heat gradient, infected them with a ...

In a laboratory experiment, researchers observed that tilapia infected with the bacteria Edwardiella piscicida moved to a warmer area of the tank for five days. This behavior, which is what a ...