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ok recently i lost a small rainbow, when i saw him alive last, his eeball was hanging out, and it dident look good. i look right blow him, and sitting there is a small cory, with sunken in eyes, and looked very thin.

the next day i found the rinbow dead, the day after that, the cory. i removed them both, and then added some warmer water (i have been letting my fishy tanks go...4 gallons had to be replaced )

but anyway, later that day there were approx 50+ cory eggs with eveidense there were more...today there is around 30..but why the deaths, and then eggs? i get the large ammount of water, but i added water like 5F higher than their water

What type of corydora are they?
-New

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You can call me Newb too, since I'm not nere new any more.

fishyhelper288,

Sorry about your fish loss

What could have caused this? Well here is one guess: Bad water quality. How long ago did you perform your last water change and how much did you replace? I would think that it takes quite a while for 4G to evaporate. Also, I assume that is your 20G, right? In this case you reduced the water volume by at least 20% (probably more, when deducting substrate and decoration to get the net volume) while maintaining the same fish load.

About the eggs: I would assume that the change in water quality and temperature triggered the cories instinct that another season (breeding season) has started.

Ingo

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Proud Member of the New Jersey Aquatic Gardeners Club

well, they are albinos i think, i have 2 species, but because the other set of species is still small, i assume they are still too young to breed.

well, there is no top on my tank, just a piece of glass sitting on the lip on the front of the tank, and being supported onto of the filter on one corner. with 2 light strips on it, so the water evaportaes rather quickly, at the rat of 1/2 inch a day, i can already see the water level has gone down as it is, and i just put the water in it last night...

the water quality is still good, judging on that i have a blue ram and ottos that are still brightly colored, and extremely active. also the small gravel is usualy clean, the only thing that congegates on it is the loose algae that the pleco hasnt eaten yet, but the loose algae gets eaten by the corys and ottos, and the pleco just gets it off the drift wood. my plants thrive, and i am pulling a 4in cutting a piece from all my stem plants usualy once a month if i get around to it. but all occupnts of the tank are:
1- blue ram
1- bolivian ram
1- threadfin rainbow
5- spotted corys
4- albino corys
1- clown pleco
1- female betta
3- ottos
2- small apistos

and those are all in a moderatly planted, 20 gallon long. the tank has been set up for around 5 months or more....actualy the tank has been set up sence last summer when i recieved the tank, but the scape hasnt been moved around in around 2 months. so the tank is very stable, and it gets water chenges once a week if i get to it, but on average every 3 weeks or so. this is the very first time i have lost fish in this tank.

Sorry but i can't tell why the deaths happened but I can tell you that most albinos around are the bronze cory. They breed pretty well. The female stores the (coughs) male product(coughs) in her abs till shes ready. Thats probably why one death lead to new life in that order.

P.S. Water changes triger spawning in most corys

See ya later
-NewBreeder16

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You can call me Newb too, since I'm not nere new any more.

Well fed and healthy Corys plus water change equals patter of tiny fins.

Works with my Pandas. In fact they're gearing up for another spawning after their latest water change of 3 hours ago ... chances are tomorrow they'll be leaving lots of nice eggs around for me to pick up and place in the nursery


Panda Catfish fan and keeper/breeder since Christmas 2002

Double post ...

Well, well, look at that.

Big water change and large live food banquet yesterday. Here we are, 24 hours down the line, and the Pandas are spawning. Mad frenzied dashes and rugby scrums all over the place.


Panda Catfish fan and keeper/breeder since Christmas 2002

lol. but there are too many preditores in my 20 long for any cory fry to survive, all the eggs were gone by this morning. i think i will set up one more tank...maybe a 55 and leave the 20 long simply for the corys, and maybe another easy to breed small schooling species. what is the smallest schooling species available? i have threadfins..or had a small school of 3, but one dissapeared, one i found after it was brutaly attacked by another fish (eyeball hanging out..kinda bad..a recent death) and all i have left is one large male that is now in hiding because he is all alone. im reluctant to pay another 30 bucks for 5 more, if they are just going to die, or just not be happy. so i may return the male so he can be happy again. my 20 long, that not long ago had that wonderfull green algae that made the tank look fabulouse, has now begun to change into something that would probly break the camera if i tried to take a pic lol. i just need to do a deep gravel vac, and clean the exposed glass realy well, and maybe break out a razor blade, and scrape off the "net/skum" algae, and hopefully restore some order in this tank.

but i found and AWESOM piece of drift wood yesterday while fishing! probly cost over $100 if you bought it from a fish store! it is basicly just a stump with the some roots still on it. it is sunbaked white, clean, aroung 2-3ft long, and 1-1.5ft wide and arounf 1-2ft tall. pics will come after my memory card is fixed (got a documant stuck on it, so i sent it to my digital teacher to fix) but i will try and rig it into my 55 gallon, or, if i can break it a little, it would look kinda cool in my 20 long as a "snapshot river" ...anyways, pics to come soon

Quick question - you have Iratherina werneri, the Threadfin Rainbowfish?

This is a species that does best either in a species aquarium or in one containing other small, peaceful fishes. I suspect it may be a fan of harder and more alkaline water than the Corys too. However, the GOOD news is that it's not that difficult to breed in captivity if you've already cut your teeth on other egglayers, and while you may be a little wary of spending another $30 on five more, well think of the income when they spawn!


Panda Catfish fan and keeper/breeder since Christmas 2002

lol, i thought about that too.. but i decided it will be best if i do not buy any more fish untill i have the 55 gallon up and running, so i can have one school of corys and one school of threadfins, all the other fish will have to go into the 55 gallon, which i hope will be beautifull, with the fish i have chosen but for now im just hopeing that the little male threadfin can hold hout in hiding a little longer, but in other news, i have found out who the aggressor is! i rescued 2 little apistos, who have sence grown alot! and i saw the smaller of the 2 activly lash out at my female betta! which, now she has a fishy style fat lip so, i just have to hurry up and find out how the heck im going to fit that driftwood in my 55 gallon!