I Think My Cuckoo Might Be Pregnant

[shona08]

hi everyone im new to this forum and was hoping for some help, i have seven cuckoo catfish in all, but one of them is worrying me a bit as i dont no if she's pregnant of if theres something else wrong with her, she's very bloated in the belly, her colour has gone a bit darker than the others and she has become a bit aggresive towards the others and is defending one area of the tank, i dont no if this in normal but if anyone has any advise it would be much appreciated, thanx

 

[invader]

Cuckoo's can't get pregnant, they are (very interesting!) egg laying species. If you get a chance, I would look up their spawning behavior, as it's very cool.

Do you have any more information on your tank, water stats, etc? I would like to make sure that the fish is not sick!