Well, for all intents and purposes, P. semicincta are
what we talk about when we say P.Kuhli. From what I've read (and I could be wrong) it's very unlikely that any "true" Kuhli loaches ever really make it into the trade, except by accident, maybe. . .because they inhabit such a small area compared to the others. . .I really would like to see a study done on if they're *actually* different species, because I can't seem to dig up very much information showing a clear difference between the two. . . but I have no idea, lol!
I'm sticking to my guns on this one. . . there is something going on with the loach population! 40% bicatch!!? Has it ALWAYS
been this way? Because I know
that 'Kuhli loaches' used to be really common and easy to find. I saw them in every fish shop! Now the shops seem to be having such a difficult time getting them in. Nothing
could make me love my P.cuneovirgata more! They're just awesome! Ever since I pegged down what they are, I've been fighting the urge to go out and get more of them just because I'm fairly sure I'll never see the lil' guys again, and they're so awesome! You can try calling Tom's Tropicals. . . maybe they'll ship them to you? I've never had a reason to ask, lol! Offer still stands though - I'll grab some (if they're still there, my cousin saw them a week or so ago), QT them, and figure out how to ship a fish, lol!
If you didn't have any other bottom dwellers in the 20l, I'd say you could *probably* get away with two groups of 6 different types of 3" loaches. When I had my 29 (same floor space), I felt that the right amount would be a single shoal of 9 fish, but you could probably squeeze a couple more fish in, if you stuck to a light stocking of fish that like the higher levels. I think everyone would be happier with a larger shoal of a single speceis, though. Heh, if you went with the dwarfs, well. . . I had 10 in a 10 gallon tank for 3 months, and they seemed to be doing very well in there!
And. . . as long as you have somewhere to plant them. . . HUZZAH FOR PLANTS! I wish that sand would hurry up and arrive!!!