18
Fry/Egg rearing:
After eggs are laid, it is best
to remove them because the
parents will eat the eggs,
ev en while they are
spawning!
Cory eggs are very sticky
too! To remove them from
flat areas, like glass, a sharp
razor like tool (or even your
CDAS membership card!)
can be used to scrape them
off.
Eggs should then be put into
a separate container (which
doesn‘t allow water from the
main tank) floating in the
main tank with the temperature at 26 Degrees Celsius.
Methylene Blue should be
added into the container to
stop fungal spores happening. Cory eggs are very fungus intolerant.
Methylene blue should be added to the separate container until you just slightly
see the eggs. The dye should last about 2-3 days. This is why you want the
separate container so the Methylene blue doesn‘t go into the main tank.
Another way to keep the eggs is in a normal fry saver with a UV steriliser facing
its direction. This will kill fungus spores on its way to the eggs.
Airation or small water movement is needed to provide oxygen for the eggs.
Eggs hatch in 3-4days after being laid depending on temperature.
It takes 2-3 days for baby Corydoras to absorb their yolk sacs. After it has been
absorbed, fry can be fed on normal fish food that has been turned into a fine
powder. But the best food is Micro worm.
Microworm is small so can be ingested by babies very easily. Baby Brine shrimp
is good food too, but is generally too big for them to ingest.
Fry should be fed sparingly but often, as is the best way to feed fry. but it is not a
requirement,
They take about 4-6 Months to sexually mature.