annmscott

On 9/4/06 I got a marigold swordtail(M) and I thought I got a male dalmation Mollie, the lower fins look male, however the fish is huge which I thought was odd because I was told the males are smaller. Anyway it had been very active until about 2 weeks ago it started hanging out by the heater and has been there ever since, It looked like it was getting fat but it was hard to see it. Anyway I went away for a few days and when I got back the fish was swimming all over the place and it is _fat_. there is the black spot I had heard about at the back part of its belly which has always been there but the fish has black spots all over it, but that one seems larger. Could I have been wrong about the sex? Is it sometimes hard to tell on some fish? Thanks for any answers.
Ann

Stradius011

From the sound of it, it seems that it is a female. You should look at the Important Topics at the top of Breeding Fish for "Sexing Livebears" for pictures.