Black stripe toads can be kept just like tomato frogs. Peat/coir/sphag. moss/leaf litter substrate. Temps about 75F in the daytime, down to 60 at night is OK. Cork flats or other suitable hides would be appreciated, one per animal at each end of the tank. Minimum tank I'd use is a 20 long for two to three animals, as they can get decent sized. They need no UV lighting, and as with most 'phibs enjoy dim lighting rather than bright.
Keep one corner fairly moist via regular misting, but not soaked. The toads will humi-regulate (is that a word?...should be in any case
) on their own.
Water bowl large enough for soaking, but shallow enough for them to stand in as they aren't the best swimmers.
Males will call and develop a black throat when in season, other than that sexing is difficult at best. Will need a large shallow pool with a 'rainy season' of daily spraying for a few weeks/months to induce breeding. Eggs must be removed or they will get eaten.
Typical toad eaters - anything that fits. I have raised them on a diet of 90% earthworms, 10% field sweeps, with Zoo-Med reptivite with D3 once per week.
One final more personal note - like other larger frogs/toads they can have quite an attitude and would enjoy biting the tips of your fingers. No true teeth, but startling if unprepared.
Have fun with them - they are quite entertaining little critters.