Different Breeding Behaviours Between Species

[soybean]

Does the breeding behaviour of corys vary slightly by species at all?

My 3 albinos are always at it, the male constantly forming the usual T shape with the two females, shimmying all over the tank, swimming with eggs between the fins and eventually they spread them all over the glass (buffet for the shrimps). They do this ALL the time, spreading eggs at least once a week, for about a year, and yet I have never seen any baby albinos.

My peppered corys, on the other hand, never display any mating behaviour at all. They pretty much ignore each other, they don't hang out with each other much. Two of this trio are my original pair - and then one day I saw a baby in the tank about 4cm long. I was very surprised. That was about 18 months ago, so now I have the three adults. Two days ago I was doing a gravel vac and saw THREE baby peppered corys, about 1cm - 1.5cm, shoot out from under the driftwood and scatter. (They are ridiculously cute, for fish.)

So now I have 6 peppered corys, despite having never seen any breeding behaviour or eggs from them, and still only 3 albinos, despite them being like rabbits. And I have 6 shrimp and lots of greedy fish in the tank, so I can't believe another three eggs have survived.

Do peppered ones like to keep it discreet and this all happens at night? Is it possible they laid their eggs under the driftwood (which is seldom disturbed) rather than stick them on the glass? I find it all a bit of a mystery.

 

[Harlequins]

I think it just depends on the cories,my albinos spawn regularly,usually plastering the glass with eggs and unless i'm quick removing them,they all get munched... mine tends to breed normally early morning.

Whereas the trilineatus/pandas/pygmys hides their eggs under & in plants.sometimes on the glass,but normally i see them becoming very active & chasing each other i know they'll probably lay eggs,although it is a hunt finding them sometimes.

Sounds like your peppereds hid their eggs and therefore the eggs managed to hatch and the young fry stayed safe without getting munched.Just because you dont see them breeding,dont mean to say they aren't.
Corys are more active at night
Normally the best way is to remove the eggs and rear any fry in a separate tank,because no matter how many eggs the albinos lay,they will more than likely be munched before they hatch.