Tilapia death question with photo

[Kevin R.]

can anyone explain what might of went wrong here? This was a female tilapia which appeared pregnant. She start showing the bulging portion on her then died. any ideas on what went wrong.

Also does anyone have a good sexing method. I cant find anything online that looks like my fish. some have a small penis like thing and some does this make the fish a male? Im assuming no due to this fish that died having it and am positive it was a female due to her being full of eggs when I cut her open.

[Kevin R.]

here is a picture of one of my tilapia with red food coloring. I still cant tell the difference. Can anyone tell me if this is a male or female?

[Judy Talley]

I would say that is a male.  the second white round area - which really isn't hi-lighted well by the food coloring - is the penis - which you can see sometimes when they are swimming as a small white pointy thing, kind of toothpick shape coming out of the abdomen in that area.  At least that's how I'm sexing mine.

Kevin R. said:

here is a picture of one of my tilapia with red food coloring. I still cant tell the difference. Can anyone tell me if this is a male or female?

[Judy Talley]

Just an FYI.  When I first moved 6 tilapia from my grow tank to my breeding tank, a couple of them appeared to have a fungus and/or flukes - perhaps from the stress of moving them.  I decided to go the cheap and easy route and salinate the entire 100 gallon tank.  It worked.  I used the formula on this site to determine the salt and went cheap and bought a 20 lb bag of pool salt from Home Depot - way less than $10.  I think I did 2 1/2 lbs for my 100 gallon tank and used a food scale to measure.

http://www.greatlakestilapia.com/salt-treatment-for-tilapia.html