Cory Eggs / Fry

[Tizer]

Hello!

Another noob to the forum

I've got a Rio 240 Tank with a good selection of young fish which includes 4 Bronze and 4 Peppered Corys. Its only a few weeks old now, was a purchase on eBay.

On saturday i did an ACL water test and found the Nitrate level in the tank was pretty high, all other tests were fine.

So i did a 40/50 Litre water change on Saturday/Sunday and Monday and cleaned out the external Fluval 305 filter in tank water as best i could, also putting in a Nitrate removal Sponge.

I tested the water again last night and have found my nitrate level has dropped down a lot. I wasnt expecting it to do so, so quickly, i wanted it to be a slow steady process!

Anyway, tank is good, fish are fine, i just wanted to give you a bit of background

The other morning i found some eggs on the back of the tank, behind the heater and the intake pipe. Unfortunately its a really cackhanded* job getting to the eggs and i only managed to succesfully transfer two to the spawning tank.

A few minutes later when i looked in the spawning tank (a small tank floating in the main tank) i noticed one of the eggs had hatched and a small fry was swimming about If im not mistaken they should take a few days to hatch, this was a little less than 15 hours at a rough guess.

I'm guessing its a Cory fry/egg because as i understand it a water change and a feeding of Bloodworm can prompt spawning? I also turned on a filter pump which circulates the water a lot faster simulating a heavy rainfall.

Anyway, to the question, the fry is about 5mm long, its head only 1mm in size, maybe less, is this a typical size for a cory fry? also the eggs are max 1mm and quite transparent, no darkening.

In the tank i have:

15 neons
8 black neons
8 corys
1 synodontisimquitementalandswimlikecrazyalldaylongthxforthebloodwormcantstopswimming
6 bleeding Heart Tetras
4 Bolivian Ram

Looking to buy another 12 corys at the weekend, something a little less common than the bronze and peppered. I'd really like to get them spawning properly.

I've not seen any super close fry closeups on the forum so far and its difficult to fit a scale to a picture, hence the post.

It would be nice if they did spawn again, 1 poor little fry is going to get lonely if the other egg doesnt hatch

Ta

 

[Tizer]

Yey, found 15 more eggs on the glass undernearth the breeding tank i have floating in the water this morning My single lone fry from the first lot will have some friends in a few days

I sat there watching them this morning, T position and everything. Watched mum carry around the eggs with her fins only to watch the naughtly bleeding heart tetras i have in there dive bomb her tummy and make the eggs fall out

Now i have to make the choice, do i let nature happen and grab the eggs whenever i see them, or remove the tetras in the hope of collecting more eggs...

It would be interesting to see if i can bring up these eggs/fry to adulthood and it would be fun the try different corys other than bronze/peppered but i could imagine its very time consuming

 

[fishy55599]

remove the eggs as they will get eaten, even by the corys themselves.

 

[Tizer]

they are in the seperate container as mentioned

i think you missunderstood, i cant decide if i should remove the tetras for future egg laying.. the corys tend to lay at the top of the glass so far that ive seen, while the rest of them mess about on the bottom.

 

[fishy55599]

they are in the seperate container as mentioned

i think you missunderstood, i cant decide if i should remove the tetras for future egg laying.. the corys tend to lay at the top of the glass so far that ive seen, while the rest of them mess about on the bottom.

corys will eat their owen eggs, so better to move the eggs.
mine eat them even if they are at the top of the tank, so i remove them if i see them.

 

[Tizer]

yes, i know, i have said that lol

all the eggs are in a seperate container, i move them as soon as i see them

its the tetras i am concerned about as they spot the corys with the eggs and knock them out from under them

i know corys will eat their own eggs, i mean, im tempted to eat them myself too, they look so yummy, but the eggs must have a much better chance of survival without the tetras after them THAT is what im pondering

 

[fishy55599]

im not sure, as i have all corys in a 15g tank.
but it would have more survival without tetras as there are less fish to eat them.

 

[Coryologist]

Image of newborn Cory fry. I hope this helps. - Frank

 

[Tizer]

nice frank thanks, does help