Hi everyone, I currently have 3 male guppies in my 36-gal tank. One guppy is perfectly healthy. The silver one has stayed at the bottom of the tank since yesterday. He's still eating though. His body & tail are darkening as you can see in the pic My other yellow guppy has been at the top of...

The thing on the bottom of the fish where the eggs pop out, I can't remember the name of it, is swollen and red on my female midas cichlid. I don't know if she's still able to lay eggs, she hasn't been eating very regularly, though she is eating now. What should I do?