How To Sex Congo Tetras

[randallhart]

Can you tell if a congo tetra is male or male if it is more rounded?
And at size can you start to see a difference?

 

[boyneburn]

Can you tell if a congo tetra is male or male if it is more rounded?
And at size can you start to see a difference?

The male has a longer dorsal fin.



http/en.wikipedia.org/wiki/Congo_tetra

 

[helterskelter]

Simple, the male has longer fins and more colour, with adualt fish this is simple.

 

[randallhart]

Thank you. Right now my 5 congo tetras are only about 1.5 inches long. One of them just happened to look smaller and a little skinnier.