gender confusion

I just made an account to ask for help, so I am fairly new to this forum. I bought a baby betta from Petco and he was labelled as a baby boy. However, my friend has taken a look at him and thinks that he is actually a girl, and I am very new to fish keeping so I can't tell. He is also about one...

I'm sorry for the title, but I truly had no idea how to call this issue or how to sum it up. Long story short: 1) Is the betta in the photos below just a very pretty female? Are stress stripes female-only? 2) What about betta fish that have a tumor? Is there anything infectious about...

Hello, New here, but have been keeping bettas for a couple years now. For some reason I really like females, they have so much personality! I currently have a Betta Sorority with 4 bettas (had a 5th but she died of fin rot 4 days after I brought her home :crying:, will be adding a 5th once I...

I have recently purchased a halfmoon betta fish (Gender not specified on container) from petsmart (I know they are a horrible provider) about two weeks ago, I know she is in a small tank that is only two gallons, but I purchased an Anubis plant to up the oxygen levels and lower ammonia levels...

Hello!! I bought an aquarium 3 weeks ago more or less. My first fish was a female betta. After a week I bought another female betta, but I think this last one is actually a plakat male. It's very strange that the one which is definitely a female attacks the new betta each time she sees her/him...

I rescued these 2 from PetCo in November, when they were so tiny I wasn't sure if they'd survive so I haven't named them yet. I feel like they'll live, so they should get names now! Part of the reason why they're still nameless is because I can't tell whether they're male or female :-/ at the...

This here is Red. I've had him...or her? Since February. I bought this little guy at petsmart, labeled as a female. I'm still pretty confused as to what he/she is, gender and tail/colour wise. If anybody could help, that would be great!