Ok, we have a little decorative concrete pond/fountain in the garden. I put some goldies and little black fish in it to eat the bugs.
All was well until I put in a lotus plant. Now the fish are fucking like there is no tommorow and from a handful of originals I now have a hundred or so fry, mostly the black ones but some gold too. I checked under the lotus leaves and it is covered in eggs of various states of hatching.
Is there a suitable fish in shops that I can add that will eat most, but not all the fry?
i.e something that will check the growth of the tank, but not eat it dry.