I killed the eggs

[TomO]

I have a couple of angels in a 75 gallon community tank. A koi and a black marble. I did a 30 percent water change today as well as other needed maintenance. a couple hours later I came back to the tank to find one of my anubias' leaves covered in what I thought was remnants of my maintenance. Only to find out they were angelfish eggs. My hands were attacked by the koi. So now my question is, what gallon tank do I need to put my angels in if I want to breed them? can I get away with a 10 gallon but it should really be a 20? Should it be planted? This first time gather needs help.

[StevesFishTanks]

20 gallon tall. I like mine bare bottom. I paint the underside with a sand color spray paint. I have the heater behind a mattenfilter. I also make my own green acrylic breeding slate that looks like a leaf but tile or a cone will do. I will buy java ferns on mats and throw those in there too.

Edited December 7, 2020 by s1_

[TomO]

So it’s natural for them to put their eggs on leaves? I thought they preferred vertical or nearly vertical places.

[TomO]

And can I leave the parents in with the fry?

[StevesFishTanks]

Depends on the pair when it comes to raising their young. 

[Fish Folk]

We have a koi pair that is happy in a 20 gal. long. They spawn every 1-2 weeks. If your adults are really large, they may need a 20-tall. We lean a piece of slate against the side, and then remove and hatch out in a separate specimen container.