2 AM Thanksgiving morning and I’m closing out the fishroom. All but 2 of the babies from Spawn #15 are dead on the bottom of the 10 gallon tank. No warning, only hours earlier everything was fine. I moved the two still alive (one white stripe, one lightning) to an empty tank on the larviculture system. Since there is no pathway in for pathogens, it could only be something related to water chemistry or the introduction of food; the ammonia alert badge remains showing that everything is just fine. No rhyme or reason. Hoping the other two a) make it and b) aren’t going to introduce some pathogen into the larviculture system (I really don’t think they are, but you never know). Could be that something like Vibrio just cropped up and whacked the tank…no clue.