I just added a small school of 8 of these to my 90g over the weekend. I really like the coloration. They seem active and swim around the top 1/3 of the tank mostly, along with the h. rasboras and danios. They are also with cardinal & rummynose tetras, clown loaches, corys and a few others..no problems so far. I expect the colors to get even better over time.
The best thing about these fish is their behavior. School better than any other aquarium fish I've kept, and are quite lively - the water boils at feeding. Also extremely hardy, grow to 2.5-2.7" and get visible teeth. The arch in their back seems to increase as the fish develops.
I began with a school of 15 of these fish in my 135 gallon. They all schooled readily as the other comments state and seem to get along with my larger cichlids with no problem. All of my fish are now over 2 inches long and have great coloration.
My only problem with these fish is they develop black spots or lesions that get progressively worse over time. I have read others with the same issue and no one seems to know the cause or cure. Three of my fish succumbed to this strange ailment.
Out of the original fifteen I have eleven left. One was squashed under a rock, one jumped from the tank, and the other three died as a result of that strange skin disease. All of the others are almost two years old and as active as ever.
I picked up 3 of these for my tank out of boredom while getting some dog food at PetSmart. I usually don't buy fish from them, but something about them made me buy them despite the dull coloration in the store. The next day I was very surprised to see how they colored up. Beautiful tetra and peaceful. Well, peaceful until it's feeding time. Then they're as quick as lightning. I've currently got 3 in my 37g with some rainbows, danios, zebra loaches, otos, sunset gouramis, round banded barbs, and rams. Thinking of picking up 2 more.
never seen these spawn before, untill i forgot to plug in my heater one day, temps where around 70F, a few suvied by hiding out in the dense patches of blyxa and grew out to adult size in about 2 months
I have a group of 10 of these guys in with my tiger barbs which they get on with fantastically. I've had them close to 3 months now and the largest isn't far off the size of a tiger barb. I started with 10, I still have 10. I've found them active, hardy, great at shoaling. They don't bother anything else in the tank. They're getting really nice deep bodies as they're growing and their colours are lovely. I'd definitely recommend. I have read they can be nippy though I've had no problems to date.
I have twelve adults in a 125g tank. They seem to be very hardy, active, and peaceful - I've had them for almost a year. Out of pure laziness I forgot to turn my tank lights on for three days - I don't know if that was the trigger, but I found 62 fry shortly thereafter. Mine stay in the lower 1/2 of the tank, only coming to the top to feed.
I bought 3 of these, absolutely stunning when I got them. I love their graceful shape! But very soon after, 1 got the strange skin disease these are known for and died. The other 2 have it as well, 1 worse than the other. They haven't died yet but really aren't very attractive in the tank! Next time I'll probably go with dwarf neon rainbows as they look a bit similar and seem to be a lot more hardy. Definitely would NOT purchase these again!
Mine are a little nippy. Got 5 to start...one died of the black spot disease (black spot that got bigger, just under his dorsal fin) and the other looked like it got attacked in the side (big chunk missing from him, lived about a day longer) Just picked up 4 more to bring my school up to 7. Its amazing how much brighter the old 3 are compared to the new 4. Their color is coming along nicely. Cool fish. Tight schooler.
I had these guys in my 30 G college freshwater tropical community tank; much to my surprise mine spawned when I first added them. I raised the fry I was able to catch (only tetra fry I've ever had), and ended up with a school of ~25 of them (and eventually an overstocked but densely planted tank). Tight schooler, very active, got along well in a generic community tank. I never noticed any aggression ~ other tank mates over the years included harlequin rasboras, zebra danios, cherry barbs, rams, and a botia loach I used to move between tanks for snail control.