Hello! I am a beginner with a ten gallon tank. I think that I have a pregnant swordtail but I'm not sure. I got it as a present. Any help would be great!
If it's a female and has been with males within 6-12 months, then yes. I'd recommend rehoming her though as they need a 29 g minimum and she'll also have 50-100 fry every month for 6-12 months after her last contact with a male.
