Cory Fry Photo Attempt

bronzefry · Post by **bronzefry** » 10 Sep 2004, 15:50

Okay, this is my first attempt at both taking photos of Aeneus cory fry that never stay still and uploading photos!

Please pardon the mess in my tank. It's overpopulated at the moment. I'm pricing a 75 gallon tank.

These fry are between 3 and 4 weeks old and I think there are between 8 and 10 of them. I also have 3 Paleatus fry, 2 weeks old, in my 15 gallon tank. After I took these pics, I did a serious scrubbing of the driftwood and the sides of the tank. But, the fry are now able to eat frozen blood worms(defrosted) with lots of enthusiasm. I've cut the number of feedings to what I do with the adults: 3 smaller feedings a day. I use mostly freeze-dried and a little bit of the micropellet. Every second or third day, I do a larger feeding with either frozen tubificid or blood worms. I try to time it just before a water change. This probably sounds kinda wierd, but I half-bury the blood worms in the gravel. The cories seem to really enjoy digging for the worms. I don't worry about the mess, because I know I'm vacuuming the gravel the next day. I tried to take good close ups of the fry, but they are like little hummingbirds, never staying still. Last night was the first night all the fry were able to go to the surface of the 29 gallon tank to take air. It seemed as if they were mimicking the grown-ups, with their after dinner air gulp. These fry have also survived the mating madness of their parents. It's almost nonstop.

irene0100 · Post by **irene0100** » 10 Sep 2004, 18:56

Well done, good pics.
What did you feed the newly hatched fry on?

I have some fry Corydoras Julii that are now a week old (previous attempts I have only got to two days) I try different ways to raise they fry. this time I ma feeding on Liquifry and micrworms.
I have a pic of a fry but dont know where to upload it on the web to add into the forum.

bronzefry · Post by **bronzefry** » 12 Sep 2004, 16:00

Thanks for the compliments! I have fed them on a combo of foods. When they first hatched, I started them on the Liquifry #2 once or twice a day, a few drops at a time only. During the same days, I also fed them frozen baby brine shrimp as a 3rd or 4th feeding.

A few days later, I made my own concoction offreeze dried by doing the following: cutting up tiny bits of fd blood worms, tubifex, daphnia and crumbled high-protein flake food. Soak for a few hours in the fridge. Dilute w/more water if it is too thick. Only do as much as they can eat for 1 or 2 feedings.(Depending what else you feed them, if anything) You'll use very little. I had an extra inkjet refill syringe, no needle, laying around. It had never been used. (I boiled it in water before using it anyway.) Thoroughly clean the syringe each use. Feed only a few ml at a time. It's a pain, but it seemed to work. A few days later, I switched back to the baby brine shrimp, but this time with crumbled up flake food in the morning (not Liquifry). At first, the fry were eating like this in the 29 gal.tank. Now they're on the same feeding schedule as the adult fish. My tank looks a bit cleaner. I'm doing this by trial and error. I hope I'm doing the right things.

The color changes the fry go through are amazing!!!!!!

irene0100 · Post by **irene0100** » 12 Sep 2004, 19:09

brilliant, well done.

Unfortunately the last 6 fry which made it to day 9 , all died today!

I have collected another 10 eggs this afternoon -will try again, and try your advice.

when you drop the food in, do they actually go to it to feed? I never really saw mine eating but they did grow quite well before going belly up.

Post by **Coryman** » 12 Sep 2004, 20:41

I have found that most if not all Corydoras fry, once free swimming, (2-3 days after hatching) are large enough to take pre-soaked powdered flake, crushed tablet food, micro worm or newly hatched brine shrimp.

Liquifry is not really suitable for Corys I find it causes more trouble than its worth, especially if the fry are kept over any gravel substrate, the Liquifry just penetrates the gravel and out of range of the fry where it breaks down and starts to contaminate the substrate. In fact this is one of the major causes of fry loss problems with breeding Corys, the best substrate is fine smooth grained sand or no substrate at all.

Ian

irene0100 · Post by **irene0100** » 12 Sep 2004, 20:52

thanks,
I was using liqufry and micro worms.
I was keeping the fry in a net cage suspended in a big tank, this way the liquifry sank through the net after about an hour. I have no way of knowing if they ate any worms as they just disappear into the water, so I was adding a paintbrush tip full every couple of hours.
well it worked up to day 9 anyway.
I think the problem may have been insufficient water changes as I was only changing the big tank every 2 days .
if this new batch hatch, I will have to try a change every day and see if it gives me any more luck.
I will also try soaking flakes as you suggest.
I guess once they are 2 weeks plus I can let them out of the net. my plan is not to release them in the main tank as I have some empora tetra who might eat them, but put them in my small tank which only has Queen arabesques and snails. -well heres hoping!

Post by **Coryman** » 12 Sep 2004, 21:01

The net idea is good but it can be improved on by placing a piece of thin glass or slate cut to size in the bottom of the net. This will contain the food. Another good idea is to attach a polly filter to the tank glass near the net with the out flow running into the net, this will keep a constant flow of clean water over the eggs and fry.

Ian

Jeff B. · Post by **Jeff B.** » 12 Sep 2004, 21:13

microworms are not so good food, some betta breeder reported that his fry has died after 12 day of feedig only microworms...
Try with BBS or powder food after 7 days on micoworms...
kind regards