09-03-2010, 07:02 PM
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Are you aware that dwarf frogs qualify as bottom feeders? Many people run into conflict, especially in small tanks, when all of the animals occupy the same territory and compete for food in the same areas of the tank. For that reason I would avoid adding more bottom feeding animals to this tank. (if this were a larger tank it would be easier to accommodate more bottom feeding animals)
In regards to the snail... with the live plants you have in there, I would avoid that species of snail... it will devour plants quickly. If a snail is something you desire it would be more appropriate to work with something like a nerite snail or 2, which will not harm the plants. 1 otto would be a limit in a 10 gallon tank, but that is also an option. Ghost shrimp could be eaten, as I have witnessed some dwarf frogs that find ghost shrimp as a tasty treat when they can catch them, so I would avoid small species of shrimp that spend a great deal of time on the bottom where the frogs reside. Ammano shrimp would be a better/safer option, but I would not add an ammano shrimp AND an otto, as they will ultimately end up competing for food where limited supply will be present.
Other options would be a small school of any of the smaller tetras, (waiting until the tank is well established and cycled before attempting anything sensitive such as neons) small rasbora species, a trio of live bearers (not including sailfin mollies) or a small school of the smaller species of rainbow fish (such as threadfin, signifur, or any of the other "blue eyed" rainbows that stays small)
Hope this helps.