Fish with Oriental Fire Bellied Toads

[Wyomingite]

Goldfish and plecos are terrible choices. Both will outgrow the aquatic area of your tank..in fact they would outgrow the whole tank even if they had it for themselves.

I personally don´t think the big issue here are the toxins from the toads. After all the toxins are released voluntarily by the toad if it´s threatened or injured, it´s not something that is continously exuded from the skin. Partial water changes would also be sufficient to maintain toxin levels under control.
The problem with fish and amphibians is the fish´s urine. It´s pure ammonia, which as you know is highly toxic for amphibians.
This said...a well planted, well filtered, cycled, stablished, and sufficiently big aquatic area should be able to manage a couple of white cloud minnows without problems. This species of fish is completely harmless, is tiny, and therefore produces very smal amounts of ammonia that the tank itself would manage, and are very resistant to both water quality and temperature.
About the toads eating the fish....i find it unlikely. They don´t hunt under water (at least normally) and are not particularly fast.

Cherry shrimp might do ok, the only problem being overpopulation (they breed SO fast). Again, toxins are extremely unlikely to be an issue if proper maintenance is done.

It´s always best to keep monospecific tanks, since that entirely avoids the risks that invariably come with any mix. But the two mixes i mentioned would be the less likely to create any kind of problem in my opinion.

Pretty much hafta concur with this. Definitely stay away from goldfish and plecos. The biggest problem with both the toxins and the ammonia would be maintaining stability in that small of a volume of water. The smaller the volume the less water there is to dilute toxins or ammonia if things do go south, so it's not gonna be too forgiving if ya overfeed or other problems arise. Ya'd hafta be diligent in water changes and filter maintenance.

White cloud mountain minnows are legal in Colorado, Tom. Another fish I'd recommend is the zebra danio, either the striped wild-type and it's morphs, or one of the colored, genetically-engineered "glofish" morphs. Regardless of the variety, they are always active, hardy and disease resistant, not finicky eaters, and are fast enough that a toad that wanted a fish stick snack would be challenged. They are slightly larger than white clouds, but not enough so that you'd increase the bioload significantly.

WYite

[Tom Highum]

Thanks. What does everyone else think about the Danios?

[Kurt]

They're ok. I had giant danios, for a while. Basically the same as a zebra danio, just bigger. I got rid of them so I could keep slower moving fish. They are aggresive at feeding time, so any slow moving fish are likely to starve.