My daughter has 3 pink Glofish tetras. Today one looks very puffy in the lower belly area. Pretty sure its a female. Could it be full of eggs, or is it bloated? I fed them some pea just in case, but I just want to know if I need to worry about it or not. She will be devastate if it's sick. Hope the pictures are good enough to see. They are quick and rarely stand still, lol.