molly wobbly swim

[june]

does anyone know why mollies swim wobbly. swim but tail is tightly closed and wobbles. has great swim ability but worried she is working to hard at swimming. she does not lay on the bottom just wobble swims. anyone have an answer.

 

[SaraB]

Is she pregnant? My mollies wobbly swim when they are pregnant but go back to normal after they give birth.