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Stealing Eggs

Posted 2011.12.23 22.40 in Aquaria

For two years, I’ve kept corydora catfish along with my apple snails. And for two years, my corydoras keep laying eggs all over the place. But they all keep disappearing within a day or two.

Now, I know the corydoras themselves do eat the eggs, but I’ve also suspected that the apple snails were getting in on the act too. And finally, after two years, I have proof!

This little video shows the snails doing their darndest to eat some eggs, though they don’t appear to be successful. These eggs are fresh, just laid in the morning, so maybe they need another day to ripen?

The video is also a pretty good way to see how the snails mouths / rasps work – they don’t have teeth, but they have a sort of tongue with a tough teeth-like surface. Not unlike a cats tongue, in a way. They use this rasp to break down food and draw it into their mouth.

Graduation Day 2

Posted 2010.01.31 19.27 in Aquaria

About a month ago, my little zebra danio graduated from the nursery tank and moved into the big fish tank with all the grownup fish. It had taken him about 4 months to reach 1-inch long, with most of that time spent in various small tanks and containers, before he went into the magic nursery.

Today, my two baby peppered corydora catfish (Corydoras paleatus) had their own graduation day, moving out of the magic nursery and into the big 38-gallon tank where their parents live. It took these two only about 6 or 7 weeks to reach the 1-inch length.

Here’s one of the young corydoras, exploring the new big tank. Before releasing them into the big tank, they spent some time floating in a cup at the top of the tank, to get accustomed to the new temperature. You can see the two of them, along with a baby snail stowaway: