no problem. the barbs are generally easy to care for, eat lots, and get large. I have had two grow to 18" in the past. I can post pics of the monsters if you would like. Care is pretty much the same as other barbs - they are not fussy eaters, they are hardy and require lots of room.
As far as 4 lemon fin barbs go, unfortunately I had to sell them.
the largest was 12" and all were doing very well.
problem is, they became quite skittish and basically just huddled in a group at the far corner of my tank LOL. when I did my weekly water change, they would jump up and smash themselves on my glass top repeatedly. I am still amazed it didn't break into a million peices.
So, my tank is cleaned and I am going fish shopping today. I am probably going to get two tinfoil barbs (less skittish), some tricolour sharks (been awhile since I have had those), who knows what really.
I don't really have a plan, just a 150g to play around with. but I definitely want lots of motion and I am going to stock it on the heavier side, as the tank is so big it needs a lot of fish to look right. 4 big fish huddled in the corner just wasn't doing it..
one day, I will get the mix in this tank right hahahahaha
all my other tanks/fish are doing well. my GF is moved in, so I am home all the time now so I can sort of 'get back' into the hobby!
stay tuned for updated pics. its been awhile.