Cory catfish sign

[4127john]

So two of my catfish decided to part of from the group and started to be together a lot is that a mating sign

 

[Borderlesscott]

Could be, usually when my Sterbai Corys start to mate i see a male and female swimming around together all other the tank, especially the male, who will be circling around the usually bigger female. Adding some cold water to the tank or reducing the temperature slightly can encourage it along, depending on species you will usually see the female swimming up and down the glass of the tank or plants depositing eggs followed by the male, at this point it's not unusual for other males to come and try to fertilise the eggs also.

 

[4127john]

The catfish are bronze catfish. Also what's the difference between the male and female

 

[Borderlesscott]

It can be difficult with Cory's to sex, I can only usually do it when they are fully grown.

Link that might help

View topic - Sexing Corydoras

 

[Samzter]

To sex Cories the females are plumper and the males are slimmer . That's when looking from above. I've only had exp with panda Cories but sexing is the same for all.