My blue diamond and turquoise pair had been doing a great job raising their little broad of 50 or so fry up until this morning- was shocked to see only about 15 fry! Thought maybe parents were now eating them but then found several floating on the surface, not dead yet but dying, and a few on the bottom, not moving much. What could have happened? And is there any chance of saving the remaining fry? I’ve been doing 75% water changes daily, fry were feeding off parents well and started eating newly hatched bbs, all seemed fine! So sad 😭