Mystery Rasbora

[lljdma06]

I recently received a shipment of various Boraras species. Not exactly what I ordered, but the vendor is having some trouble with his exported substituting fish. Well, anyhoo, along with some boraras species, I received two of these that I cannot positively Id.

Here are some photos. They are pretty hardy and eat well, but not really my cup of tea as far as rasboras go.

There is a thin black line just below the orangeish line. The camera washes it out. No markings on the fines that I can determine, though the fish may not be quite colored up yet.

Thanks for your help.

llj

 

[rocknurworld2006]

Rasbora brittani

could it be this?

 

[Gill]

Red Line Rasboras, Really Nice give them time, Dev UK has abour 15 Of these and they are Amazing when they start to maature more.

 

[Lateral Line]

Rasbora pauciperforata, Glowlight Rasbora, (AKA Redline as Gill said - common names huh?). First Rasbora I bred I think, must of been 30+ years ago, memory sometimes lets me down with the trivia! The dark line is not always apparent, in breeding garb, they can turn quite brown with the orange highlight.

but not really my cup of tea as far as rasboras go.

Lovely little things - each to their own though.

 

[lljdma06]

Rasbora pauciperforata, Glowlight Rasbora, (AKA Redline as Gill said - common names huh?). First Rasbora I bred I think, must of been 30+ years ago, memory sometimes lets me down with the trivia! The dark line is not always apparent, in breeding garb, they can turn quite brown with the orange highlight.

but not really my cup of tea as far as rasboras go.

Lovely little things - each to their own though.

Awwww, the first rasbora your bred. That's how I feel about kribensis, my first egg-layer. Of all the pictures so far that I've seen, that species is the best match, though the stripe on mine are not so red, more golden orange. I have more alkaline water, which some sources say that is a factor in the coloration of some rasbora species. I know B. brigittae and B. urophthalmoides can have a more intense red cast to their coloring under more acidic conditions. I may inject CO2 into this tank to counter my alkalinity, as all the species would probably benefit from CO2 injection, including the plants.

Well, I don't hate them. It's just that I think that, if they are indeed R. pauciperforata, that they may get too big for my Boraras species and the ember tetras that I have there now to feel comfortable. So no, not my cup of tea under those circumstances. I don't make unplanned purchases, these fish were quite the surprise, arriving in a bag of B. urophthalmoides. The vendor is even surprised that they turned up. Sources say that R. pauciperforata is peaceful, but I just don't want them to crowd the other species, which can become quite reclusive if not confident. The other species, however, are fine with the otos, which are getting quite hefty, so who knows? The R. pauciperforata may be able to stay. There are only two of them and they are still quite small, about an inch long.

llj

 

[Lateral Line]

There are no aggressive Rasboras. The only issue is size, a real big fish that is totally peaceful will eat small fish with no bad intent, it is simply live food, in the same way a small fish will eat a mosquito larvae or brine shrimp. R. pauciperforata do not grow large and are as docile as they come.

The stripe on the side of R. pauciperforata is similar to that on a Glowlight tetra, it is not really red.

 

[lljdma06]

There are no aggressive Rasboras. The only issue is size, a real big fish that is totally peaceful will eat small fish with no bad intent, it is simply live food, in the same way a small fish will eat a mosquito larvae or brine shrimp. R. pauciperforata do not grow large and are as docile as they come.

The stripe on the side of R. pauciperforata is similar to that on a Glowlight tetra, it is not really red.

I know rasboras are not aggressive, I just don't want the Boraras to be intimidated by the presence of a larger fish. I found an entry in Fishbase that has an interesting picture. The species is R. agilis.

http/fishbase.com/Photos/ThumbnailsSummary.php?ID=10341

Bears a striking resemblance, doesn't it? Anyway, it's a toss-up between R. agilis and R. pauciperforata. I just have to wait and see when these two get bigger. For now, the Boraras actually school with them, so I'm not really seeing a problem in the future since the Boraras are already used to their presence, as they are with the otos. Right now, the boisterous ones in the tank are the hyphessobrycon amandae. They behave like other members of Hyphessobrycon, just on a much, much, much smaller scale. Two males were duking it out today, and the victor looked to be courting one of the possible females. They don't bother the Boraras, though.

Thanks for the contributions, everybody. I think it's been narrowed down.

llj

 

[Gill]

Guys

I am going to be getting a Shoal of Brilliant Rasboras, they are more suited to my Water then Denisoni Barbs and IMHO look better as the are peahy pink to deep lavender in color.

I'll post pix when they arrive

 

[Lateral Line]

R. agilis is a slimmer fish the pauciperforata, a really nice R. in fact. The thing that always stikes about agilis is it has a black stripe with a highlight, whereas pauciperforata has a glowlight stripe with a darker stripe which may be absent.

boisterous ones in the tank are the hyphessobrycon amandae.

Once a characin, always a characin.

 

[lljdma06]

Guys

I am going to be getting a Shoal of Brilliant Rasboras, they are more suited to my Water then Denisoni Barbs and IMHO look better as the are peahy pink to deep lavender in color.

I'll post pix when they arrive

By all means post pictures. I'd love to see them. I've always liked rasboras. All the benefits of a characin with none of the possible drawbacks.

R. agilis is a slimmer fish the pauciperforata, a really nice R. in fact. The thing that always stikes about agilis is it has a black stripe with a highlight, whereas pauciperforata has a glowlight stripe with a darker stripe which may be absent.

It's between R. agilis and R. pauciperforata, which is quite the narrow-down and much better than I expected. I'll wait then to build a possible school until I know for sure, which means waiting until they mature some more. Right now, the coloration changes with the lighting. Perhaps I even have a pair, which would be pretty cool.

boisterous ones in the tank are the hyphessobrycon amandae.

Once a characin, always a characin.

Ain't that the truth.

 

[Gill]

I'll dig out my old pix as when i had the arrow i added them as dithers and he ate them all within a day.
but they were only 20p each as the LFS knew nothing about them and wanted rid.