Hey,
My brother's female swordtail, who we assumed was quite pregnant last night, has lost her "roundness" but no babies in the breeding trap. The only thing in there, apart from the swordtail and java moss, is a fair bit fishy poo.
The only way that I would have thought, for her to get so big, and then lose it in poo is-she got constipated.
Any ideas??
Cheers