Sorry to say no extra fins in the tank, they must have been spooning. I've have 25 original Tilapia's just over 1 year old...not sure what I'm doing wrong.

I know that I had some females because when I did my autopsies on good healthy looking fish that I found dead, their were some with large sacks of eggs inside.

Some fish act funny and won't eat, when they die it's not a shock. But to find one of my healthy fish floating in the morning, make me wonder what happened in the early morning hours that cause their death .