> As with any predator/prey relationship, I would expect you would need a
> very large sandbed full of inverts to supplement just one sucker.
> Otherwise the sucker/s will clean out all the prey and the prey won't be
> able to reproduce. I've thought of doing something similar with a
> livebearer as prey and a larger predator fish. But you would need a large
> tank with lots of room for prey and comparatively little space for the
> predator. Not that it's impossible, just not suited to a 50 gallon tank...
> unless the predators are quite small and few.
>
You could use a refugium tank similar to the way that marine aquarists do to
maintain a population of invertebrate food organisms.
Moon
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