Albino Corys Have Bred - No fry survived

[nigsy]

So my Albino Cories went into a breeding frenzie recently and covered the walls of the tank in eggs.
I set up a second quarantine tank and carefully removed the eggs and moved them to said tank.
After a few day the eggs started hatching, little white 'tadpoles' emerged but none of them survived.

I'm not really that worried about breeding corries but if it happens again it would be nice to have a better understanding of why they didn't survive beyond hatching.

I don't have the water parameters; but took water form my main tank to fill the 2nd tank and kept the temps constant between the 2. The filter medium was also taken from the main tank so would have been mature.

Just some thoughts really?

 

[hobby5]

Google some breeding reports to the exact cory species. Without detailed information (water parameters, temp, etc.) we can only guess in the blue. Did you feed them? Oxygen?

 

[Baker]

Yeah in my experience it's very hard to overfeed fry. Live or frozen daphnia or baby brine shrimp work wonders. Did you have an open intake on your filter big enough to suck in and kill the fry? You also want to make sure there's a section of current flowing on the eggs to avoid fungusing but not so much that when they hatch they can never avoid getting pushed around.

As far as breeding in general, cories breed quite readily. Mine lay every time there's a water change, usually slightly cold water will elicit a breeding response. You'll probably get to a point where they breed so much that you don't even bother trying to hatch them but if you are interested in growing them out I suggest you set up a permanent grow out tank rather than just setting it up before they hatch. All you really need is a sponge filter and a heater and regular water changes but dense cover such as java moss will provide a lot more comfort as open water can be stressful on fry if they don't feel they have a place to safely retreat. Adding vegetation such as java moss also aids in the growth of microbes that the fry will naturally prey upon but frequent feedings of the above listed food or even things like specialty fry food or finely ground flake food should work.

In my experience certain shrimp will not actually eat eggs unless they have fungused over but they actually aid the eggs by cleaning them, but I'm not surprised if other people have had different experiences.

 

[Munroco]

I've read that about shrimp cleaning eggs, have also read that the small ramshorn snails do the same.