The lifespan of genetically modified fluorescent fish (as reported by their evil genius creators) is about a year. Today, Bjorkland, Front End Loader II, and Glow-ey left this mortal world, defying the odds and living well beyond what was expected.

They left together, like those stories of sweet old couples who take their last breaths within minutes of each other, except they were a threesome. 

Rest in GMO day-glow polyamorous peace you much-loved weirdos.
Thankfully, the kids all seem okay. Just a few minutes of circle of life talk followed by the almost 8 year old fact-checking my lifespan claims via Google, and they were off and interested in other things.  Mostly though I suspect that they think the loss of the fish paves the way for a pet caracal. Dream on, my sweet little wannabe zookeepers.  Dream on.