Gendering

[whodatthere]

Is 1 male and 2 fem? I got the 2nd one yesterday and was wondering if I should get another if it’s just 1 fem and 1 male. Don’t want the male to get too nippy. But I also don’t know if I can add more fish to my tank. I have 6 tetras 2 peacock 1 swordtail 6 Cory’s 1 huge mystery snail and some random baby snails on the glass. It’s a 20 gal

 

[Andy Sager]

Unless you plan on breeding them, you are better off making sure they have plenty of hiding spots to get away from each other rather than adding more to " spread out" aggression. In your pics, yes, #2 should be a female because of the black edge to her fins that males ( fish in pic 1) do not have. If you are trying to breed them, you are best to get a small group of 4-6 of younger fish and let them pair off naturally before breeding them in a separate tank. You really don't want them breeding in the main tank as the fry will have little chance with the fish you mentioned.
I'll also add that your selection of fish do not really go well together. The Tetras, Swordtail and Cories like to have a faster moving water flow than the gudgeons do. Make sure you have plenty of hiding places where they lower or disperse the water flow.

Hope this helps.

 

[whodatthere]

Unless you plan on breeding them, you are better off making sure they have plenty of hiding spots to get away from each other rather than adding more to " spread out" aggression. In your pics, yes, #2 should be a female because of the black edge to her fins that males ( fish in pic 1) do not have. If you are trying to breed them, you are best to get a small group of 4-6 of younger fish and let them pair off naturally before breeding them in a separate tank. You really don't want them breeding in the main tank as the fry will have little chance with the fish you mentioned.
I'll also add that your selection of fish do not really go well together. The Tetras, Swordtail and Cories like to have a faster moving water flow than the gudgeons do. Make sure you have plenty of hiding places where they lower or disperse the water flow.

Hope this helps.

Okay that’s what I was thinking! Is this enough hiding spots? I also added a pleco cave lol

 

[Andy Sager]

Okay that’s what I was thinking! Is this enough hiding spots? I also added a pleco cave lol

You'll know if you see any aggression or the fish has a hard time swimming.

 

[whodatthere]

You'll know if you see any aggression or the fish has a hard time swimming.

I want to prevent jt before it happens!

 

[Andy Sager]

I want to prevent jt before it happens!

Fish don't always read the book tho so what looks like a lot of cover to you may not look enough to the fish. Your tank is not barren so that's a good start.