I have a male and a female that live together in a 70 gallon tank. They both seemed fine until recently when the female started swimmimg into the glass alot and trying to escape. She never acted like this before and all that I can think of is perhaps she might have some eggs to lay. I put her in a big tub with water on one side that leads up to a beach of both lake mud and sand in hopes that she would lay but no luck so far. I'm pretty sure she is pregnant though since the male has been doing his little mating dance for a year or so. Any suggestions thoughts, or ideas welcome.