What Gender Is My Betta?

Sorry if this is in the wrong place! I'm new to this site. A few days ago I got a few Bettas from Petsmart. I've had Bettas before when I was younger, so of course they weren't properly cared for. Now that I'm older I really want to get into the hobby. Anyway, one Betta a got was titled as a female but I'm not too convinced. First, this fish is absolutely HUGE. I know some females can be larger than males, but compared to my other female it's a monster. "She" also constantly chases the other female in the tank just like a male would do, but it doesn't flare at the female. Then when I put my male with it, thinking it was a female, and they flared at each other but there was no fighting. This "female" also has what looks like an ovipositor.
 
Sorry if this sounds confusing, but if anyone could clear this up that'd be great! Thanks so much.
 
Here's a picture. I'm positive the blue one is a female, it's the red I'm not sure about.
 

What exactly do you have going on? How many tanks, how many fish, which fish in each tank?

Hello and welcome to the site, Yes the fish is looking like a young male, best to separate him before he causes the female crowntail anymore stress, it is always best to buy females in groups of 6 or more to spread out any aggression, that is assuming you have the tank space? if not she should be fine on her own, if you don't have another tank you could always divide it  depending on it's size of course, do you have a full tank shot?

Blough said:

What exactly do you have going on? How many tanks, how many fish, which fish in each tank?

Click to expand...

 
I have two tanks. One 2.5 for one male and a 3.5 for the other two. I do have an extra 10 gallon that I used to house a rodent.
 
 

betta fish said:

Hello and welcome to the site, Yes the fish is looking like a young male, best to separate him before he causes the female crowntail anymore stress, it is always best to buy females in groups of 6 or more to spread out any aggression, that is assuming you have the tank space? if not she should be fine on her own, if you don't have another tank you could always divide it 

depending on it's size of course, do you have a full tank shot?

Click to expand...

 
Thank you! I don't have a full tank shot, but the one pictured is a 3.5 gallon. I also have an empty 10 gallon and a 20 gallon if I need it. Which would work better for 6 females? I currently have a hamster in my 20 gallon, but I can move her to a different cage.

0_Infinite_0 said:

 

What exactly do you have going on? How many tanks, how many fish, which fish in each tank?

Click to expand...

 
I have two tanks. One 2.5 for one male and a 3.5 for the other two. I do have an extra 10 gallon that I used to house a rodent.
 
 

betta fish said:

Hello and welcome to the site, Yes the fish is looking like a young male, best to separate him before he causes the female crowntail anymore stress, it is always best to buy females in groups of 6 or more to spread out any aggression, that is assuming you have the tank space? if not she should be fine on her own, if you don't have another tank you could always divide it 

depending on it's size of course, do you have a full tank shot?

Click to expand...

 
Thank you! I don't have a full tank shot, but the one pictured is a 3.5 gallon. I also have an empty 10 gallon and a 20 gallon if I need it. Which would work better for 6 females? I currently have a hamster in my 20 gallon, but I can move her to a different cage.
 

Click to expand...

2.5 and 3.5 gallons are too small for one betta, much less two. I wouldn't put one in anything less than 5 gallons, 10 is better.

Blough said:

 

 


What exactly do you have going on? How many tanks, how many fish, which fish in each tank?

Click to expand...

 
I have two tanks. One 2.5 for one male and a 3.5 for the other two. I do have an extra 10 gallon that I used to house a rodent.
 
 

betta fish said:

Hello and welcome to the site, Yes the fish is looking like a young male, best to separate him before he causes the female crowntail anymore stress, it is always best to buy females in groups of 6 or more to spread out any aggression, that is assuming you have the tank space? if not she should be fine on her own, if you don't have another tank you could always divide it 

depending on it's size of course, do you have a full tank shot?

Click to expand...

 
Thank you! I don't have a full tank shot, but the one pictured is a 3.5 gallon. I also have an empty 10 gallon and a 20 gallon if I need it. Which would work better for 6 females? I currently have a hamster in my 20 gallon, but I can move her to a different cage.
 

Click to expand...

2.5 and 3.5 gallons are too small for one betta, much less two. I wouldn't put one in anything less than 5 gallons, 10 is better.
 


 
I moved two of them in a divided 10 gallon with the other still in the 3.5. I think I'll use my 20 gallon. Thanks.