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Well, I've been noticing what I thought was a new funky type of algae in my tank (I've had it all lately. Light green, dark green,brown, black, red, you name it), but as the week wore on, and I took a good close look, looks to me like eggs. I spoke with a friend and we theorized it's the ottos. Well, actually we're pretty much certain. The only other egg layers I have are cories, and as far as I know they don't stick their eggs on the glass. So. Now I have...oh, six different clutches of otto eggs all stuck on different parts of the tank (the clutch right behind the filter intake didn't make it, sadly). Thinking back, they've done this before. Bout every month or so. Unfortunately the eggs always...well, the best way I can describe it is "dissolve". I'm not sure if it's because of the pH (I live in Arizona just a mile or so from a salt mine. The water isn't toxic, but it does make for a high pH. Appx 7.7) or what. But if someone is familiar with the requirements for keeping otto eggs healthy, I woud really appreciate it. And no, I don't have the current specs on the water at this time. I'm heading to the LFS Monday to get it tested. Oh, yes. 20 gallon tank. 4 ottos, 5 cories, 2 dwarf malobar puffers, and 3 adult and scads of baby guppies. (yum yums for the puffers )Thanks in advance.

Are you sure the puffers haven't been having a go at the eggs?

Sadly, I think you're right. If not the puffers, then someone else. But I'd like to see some of them hatch. Someone else said that it could just as easily have been my cories laying eggs on the glass. That would be cool, too, but only if I can get them to hatch.

Can i know how big are your otos when they spawn?

Well, I've had my otos for about a year. The eggs started showing up about five to six months ago. So, half a year old. But, I'm beginning to think it's the cories. I don't recall the last time, but this time, the eggs showed up after a large, cool water change. Either way, my fishies are spawning, and that=good.

honestly i think it is your cories

I'm new to this board. Hi
I have had a pair of Peppered Corys for about 6 weeks or so. I originally got them to add some life to a 10 gallon snail tank. Apparently I picked up a male and female, because they are laying eggs all over the place! I had noticed that the snails were not quite as active, I now attribute that to the defensive stance of the Corys. I noticed that I my gravel vacuum was being closely watched by the smaller one. So close in fact that I was worried he might get sucked into it.

I finally witnessed them performing the act after turning out the main lights and turning on the little LED spot lights. The female carries a few eggs around by squeezing two of the fins together underneath her body until she finds where she wants to lay them. I'm not sure if I've seen the fertilization act correctly or not, but it looks kinda kinky

Barbie, you said you were able to move some eggs by just sticking them to your finger, but that wasn't the best method... what is the best method of collecting the eggs? I'd like to see them hatch!

i must agree that it is the cory's. the few times i spawned my c. aeneus they did spawn on the side of the tank glass.

ken walker