Male or Female Betta??

[Lisaburke130]

Hi everyone!
I bought a baby Female Betta in early September. She has since grown so much that I wonder if she might be a male. Any feedback would be greatly appreciated!!
The 3rd pic was taken not too long after I got her. Notice she had no blue!

 

[Autumnsky]

The chest area seems deep, which would have me thinking female.

But the ventral fins long string like ones in front seen to pass the anal fin and that would point towards a male. It is possible it is still at a young enough age to tell.

If it builds a bubble nest, it's a male.

Look for the eggspots, as the fish gets older, the ovipositor tube, on the under belly sides like a dot after the ventral fins and before the vent and anal fin.

 

[SaraB]

The chest area seems deep, which would have me thinking female.

But the ventral fins long string like ones in front seen to pass the anal fin and that would point towards a male. It is possible it is still at a young enough age to tell.

If it builds a bubble nest, it's a male.

Look for the eggspots, as the fish gets older, the ovipositor tube, on the under belly sides like a dot after the ventral fins and before the vent and anal fin.

My female betta has made a bubble nest before. It's uncommon but it can happen. I recommend just looking for the eggspot/ovipositor it's pretty much the best method.