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Suggestions: Danio tinwini (better nano fish than their cousins, the zebras, D. rerio), and Petruichthys sp. 'rosy' (rosy loaches, which are smaller than kuhli's). Just for you to look into.
The tinwini's are very good dither fish, they'll just swim all day, and are good at bringing out CPD's. Rosy loaches will school with CPD's and are endemic to the same area as CPD's. However, I've also heard that Chilli rasboras are good dithers as well.
Kuhli's are a tentative no. Some might be okay with keeping them in a 10, but I feel that they're similar to zebra danios. Both can be kept in a 10 gallon, but really, I feel that both are simply too active, and would appreciate a 20 long instead to go zipping around the tank.
Judging from the list you gave us, I'd go for the following combination of CPD's, sparkling gouramis and chilli rasboras from the list you gave us, since you're going for a community, rather than a species tank. Both the CPD's and rasboras like groups of at least 8 (I feel that most schooling species do better in groups of 8, rather than 6), and the gouramis could do with a trio, 1M:2F. Luckily, they're all nano fish, so water parameters won't be that hard to keep in line. Aggression in the tank shouldn't be a problem. The only aggression I've heard of in sparkling gouramis is with cherry shrimp and other assorted shrimp species.
Personally, I'd go for a modified biotope community, featuring tinwini's, CPD's, and rosy loaches. 8 fish each, which follows the general rules of top dwellers (danio tinwini), middle dwellers (CPD's), and bottom dwellers (rosy loaches). Again, water parameters shouldn't be too hard to keep in line since they're all nano fish. But again, no shrimp, since I'm unsure about rosy loaches and shrimp compatibility.
The tinwini's are very good dither fish, they'll just swim all day, and are good at bringing out CPD's. Rosy loaches will school with CPD's and are endemic to the same area as CPD's. However, I've also heard that Chilli rasboras are good dithers as well.
Kuhli's are a tentative no. Some might be okay with keeping them in a 10, but I feel that they're similar to zebra danios. Both can be kept in a 10 gallon, but really, I feel that both are simply too active, and would appreciate a 20 long instead to go zipping around the tank.
Judging from the list you gave us, I'd go for the following combination of CPD's, sparkling gouramis and chilli rasboras from the list you gave us, since you're going for a community, rather than a species tank. Both the CPD's and rasboras like groups of at least 8 (I feel that most schooling species do better in groups of 8, rather than 6), and the gouramis could do with a trio, 1M:2F. Luckily, they're all nano fish, so water parameters won't be that hard to keep in line. Aggression in the tank shouldn't be a problem. The only aggression I've heard of in sparkling gouramis is with cherry shrimp and other assorted shrimp species.
Personally, I'd go for a modified biotope community, featuring tinwini's, CPD's, and rosy loaches. 8 fish each, which follows the general rules of top dwellers (danio tinwini), middle dwellers (CPD's), and bottom dwellers (rosy loaches). Again, water parameters shouldn't be too hard to keep in line since they're all nano fish. But again, no shrimp, since I'm unsure about rosy loaches and shrimp compatibility.
