Long Finned Chili Rasbora? - The Planted Tank Forum
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post #1 of 13 (permalink) Old 06-21-2019, 05:20 PM Thread Starter
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Long Finned Chili Rasbora?

Long story short, one of my tanks was fighting some GDA and it got a bit out of hand while I was trying to wait it out. Ended up doing a full clean/replanting yesterday and found this little guy swimming around. I've never seen a Rasbora with long fins like this and was curious if anyone had any more info about them. He's really pretty with their darting motions and those long fins though!
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post #2 of 13 (permalink) Old 06-21-2019, 05:23 PM
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Stunning. They must exist but I don't recall ever seeing any one a wholesale list. Please breed those!

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post #3 of 13 (permalink) Old 06-22-2019, 07:12 AM
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I typically hate long-fin stuff, but I think this is pretty cool. Mostly because it's probably some one-in-a-million find!
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post #4 of 13 (permalink) Old 06-22-2019, 07:18 PM
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A quick google search for "long finned chili rasboras" doesn't bring anything up.

Breed that boy!
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post #5 of 13 (permalink) Old 06-24-2019, 08:26 PM Thread Starter
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Well thats pretty awesome, though I'm a bit bummed to not see anymore of them! I'll see If I can get a breeding tank setup for them and see what happens.. No time like the present to learn to breed some fish.

If anyone's got any tips on or where I should take a look for some please send them over. I've had good luck breeding shrimp but I feel like its almost cheating how quickly they breed.
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post #6 of 13 (permalink) Old 06-24-2019, 08:59 PM
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I'd set a 20 long up using RO water, air driven sponge filter, and minimal if any substrate. Any driftwood with mosses on it you already have would be a great addition. Get it going for a month, don't sweat any film algae. Start feeding the adult fish live BBS, frozen cyclopeeze, any tiny live or frozen foods you can get your hands on. Hopefully you'll start seeing some rounded bellies on females pretty quickly. Drip acclimate these females and your long finned male to the new tank if your tank water isn't as soft (I doubt it would be). Dim lighting and check the fish daily. Return any females who seem to have laid back to the main tank, and the long finned male with the last one to scatter her eggs. Care for fry as with any small tetra or characin.

What I don't know is whether the gene in these is simple recessive or line bred. If simple recessive (which I suspect), either half or none of the offspring will have long fins, depending on whether or not any of the females was heterozygous for this trait. But don't worry, 100% of the offspring will be. However, you will have to grow these up and breed them back to that male again to get substantial numbers of long finned offspring. If you get any long finned fry, any females should be bred back to the father. If these are line bred, I would expect to see some growing fry with longer finnage. Select these females to breed back to the father. It isn't going to be instant, but it's worth it for a first.
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post #7 of 13 (permalink) Old 06-24-2019, 09:16 PM
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I think it would be worth working with someone that frequently breeds fish to ensure that you are successful. Your local aquarium club might be a good resource. This is an incredible looking fish, and I can see this being a huge draw for those of us that keep small fish. It is hard enough as-is to source real chili rasboras with many misidentifications at LFS, and seemingly mixed groups of similar non-chili rasboras. I would LOVE a long-finned variety. Big fins helps add some interest to micro-fish without increasing the risk to shrimp.

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post #8 of 13 (permalink) Old 06-26-2019, 12:09 AM Thread Starter
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Originally Posted by Blue Ridge Reef View Post
I'd set a 20 long up using RO water, air driven sponge filter, and minimal if any substrate. Any driftwood with mosses on it you already have would be a great addition. Get it going for a month, don't sweat any film algae. Start feeding the adult fish live BBS, frozen cyclopeeze, any tiny live or frozen foods you can get your hands on. Hopefully you'll start seeing some rounded bellies on females pretty quickly. Drip acclimate these females and your long finned male to the new tank if your tank water isn't as soft (I doubt it would be). Dim lighting and check the fish daily. Return any females who seem to have laid back to the main tank, and the long finned male with the last one to scatter her eggs. Care for fry as with any small tetra or characin.

What I don't know is whether the gene in these is simple recessive or line bred. If simple recessive (which I suspect), either half or none of the offspring will have long fins, depending on whether or not any of the females was heterozygous for this trait. But don't worry, 100% of the offspring will be. However, you will have to grow these up and breed them back to that male again to get substantial numbers of long finned offspring. If you get any long finned fry, any females should be bred back to the father. If these are line bred, I would expect to see some growing fry with longer finnage. Select these females to breed back to the father. It isn't going to be instant, but it's worth it for a first.
Oh man super helpful, thank you so much! I'll be sure to report back once I've got something setup in the next week or so to get them hopefully spawning.
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post #9 of 13 (permalink) Old 06-26-2019, 07:50 PM
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Sweet! If you weren't going to, I was scratching my head thinking about what to offer you for your group. I would get some Salty Shrimp, Equilibrium or so forth to get the initial tank water to a GH of 1-2, but ideally 0 KH. pH can be as low as 4 in their native conditions from what I've read so if it's off the API chart, you should be fine. A bucket of Amazonia or other acid buffering soil in the tank couldn't hurt. Basically, set them up like you would crystal reds.

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post #10 of 13 (permalink) Old 07-01-2019, 02:30 PM
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It is hard enough as-is to source real chili rasboras with many misidentifications at LFS, and seemingly mixed groups of similar non-chili rasboras.
??? My local store gets them by the THOUSAND. I'm sure some stores might get B. maculatus or B. urophthalmoides only, there are plenty of B. brigittae to be had.

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post #11 of 13 (permalink) Old 07-01-2019, 04:00 PM
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??? My local store gets them by the THOUSAND. I'm sure some stores might get B. maculatus or B. urophthalmoides only, there are plenty of B. brigittae to be had.

I have seen real ones at my two LFS a couple times, but much more often they are maculatus, naevus, or urophthalmoides.They generally will have poor coloration and a spot rather than the stripe and bright red. I understand that in-store they are not colored up properly, but these are not the same. Online stores also are frequently out of stock. I wish I had easy access to them. They are what I originally wanted to keep with our shrimp but we went with CPD instead.


Hope these longfins are eventually able to reach the hobby.

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post #12 of 13 (permalink) Old 07-01-2019, 05:44 PM
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That's awesome! Good luck with breeding. You could be the first to introduce long-finned chili rasboras to the world! That's about as cool as it gets! No pressure, though. Haha.
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post #13 of 13 (permalink) Old 07-03-2019, 03:34 AM
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Online stores also are frequently out of stock. I wish I had easy access to them. They are what I originally wanted to keep with our shrimp but we went with CPD instead.
Wet Spot has plenty of them. And in the summer Priority shipping won't break your bank if you are worried about that. Give them a call/email.

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