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Yes, that link is for Colombia in general but there are many different river systems, a few that are listed for the Meta drainage that may be easy to find include Hyphessobrycon sweglesi (Red phantom tetra), Axelrodia riesei (ruby tetra) and Hyphessobrycon metae (purple tetra). You might also...
I don't think any if these species would really be appropriate if you want to do an accurate biotope, definitely not emperor tetras, maybe check the lists of species on the papers I posted (one was the same that you found) as well as the videos that have been linked. I believe Corydoras melini...
OK, I looked up Althernanthera reineckii and found the native range to be Bolivia, Brazil and Northern Argentina. Perhaps this is wrong or it has been introduced in Colombia? It is not mentioned in the paper I posted earlier.
Yes, its worth reading as much as possible as macmasteri may be found in a range of different habitat types within its range. The video by Oliver Lucanus is very nice and shows a lot of smallish rounded rocks with algae on and plenty of leaf litter, but no rooted aquatic plants, it should be...
Not found naturally in Colombia..
Something with a red colour that does occur in the region is Cabomba furcata
The article you linked is the same one posted by the OP, just in Spanish. The article I posted on aquatic vegetation is also in Spanish, it describes different communities of...
They are all part of the Amazon drainage (I think the Maués drains to the Paraná but is somehow connected with the Amazon and Madeira. I am not sure if there are any small tributaries that interconnect any of the other drainages, but I don't think so. To be honest I imagine that these are fish...
Actually clearwater rivers also have very low conductivity, pH not so low as blackwater but not high either - eg Rio Tapajos: pH 6.5 ± 0,4, condutivity 14,4 ± 13,1 µS/cm
The distribution of D. maculatus includes the drainages of the Rio Madeira (whitewater), Rio Tapajós (clearwater), Rio Trombetas (blackwater) and Rio Maués (not sure) and part of the Rio Amazonas near to Parintins (whitewater), so it is not strictly a blackwater species but may occur in...
I have an article that looks at fish diversity of small streams in the Tapajos drainage system, D. maculatus. was collected in some of the streams investigated. The mean pH of these small streams was 4.5, (range 3.4-5.3), with low conductivity (mean 15.4 µS/cm, range 6.4-46.4) and mean...
OK that worked, but there are many habitat types, the floodplain regions have aquatic plants listed in that paper, not sure if this is the habitat where Macmasteri is found? As there are also morichales and other more shaded regions that probably don't have any or many plants.
Sorry the second link did not work properly, here is a link to the article:
https://www.lillo.org.ar/journals/index.php/acta-zoologica-lilloana/article/view/1837/1841
You really should try the plastic bottle trap method, it works really well for catching small cichlids, for those fry just squirt some live Artemia in the traps and you’ll soon catch most of them. I caught all (except 1) of my Guianacara fry in these traps in one morning and I didn’t even have...
I seem to remember watching a video in the Below Water series by Oliver Lucanus, I am sure he mentioned that blackwater species in particular tend to lose the red colouration in aquaria.
That is interesting, I have noticed recently that the ocelli on the dorsal fin of my dwarf pike cichlid female has faded almost completely, is this a similar thing or just age related I wonder?
To be honest it’s not too difficult to deal with just by removing it as much as possible and reducing light if necessary - as long as you deal with it as soon as appears and don’t let it spread too much.