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  1. TCMontium

    a few Biotoecus opercularis of mine

    I do not know if they really are B. opercularis or another Biotoecus species but they do look like it. They are just around 3 cm right now so they have some growing to do. They were listed as wild fish, but they did accept dry food relatively fast. I keep them in an aquarium with the values of...
  2. TCMontium

    Pure R/O or Distilled water health effects

    Hi, I usually see measurements of 1-50 microSiemens of conductivity from wild collection sites of many dwarf cichlids, tetras and pencilfish etc. And some internet articles such as Seriouslyfish pages recommend water with close to or straight up 0 ppm TDS for many low pH preferring species. But...
  3. TCMontium

    Dicrossus filamentosus fry care and death

    Hi, After years of unsuccessful eggs from several pairs of Dicrossus filamentosus, this last batch of eggs managed to hatch. I suppose using distilled instead of RO water or using peat moss and alder cones instead of catappa leaves did the trick. But after 2-3 days of their hatching, most of...
  4. TCMontium

    Dicrossus filamentosus pair egg and fry care

    Hi, My Dicrossus filamentosus pair laid eggs in a densely planted aquarium with a bottom area of 24x16 inches. Female's nest is in a corner and doesn't see the male except if male were to go to the 1/3rd of the aquarium where the felames nest is. Plants are dense enough that I can't find the...
  5. TCMontium

    Can be deleted

  6. TCMontium

    Effects of ions like Ca and Mg etc. on skeletal developement

    Hello, Does anyone know any scientific study about the correlation between Apistogramma skeletal development and conductivity/TDS of water or specificly the calcium-ion content? Or any such study of fish that naturally found in waters that have similar ion/conductivity related parameters to the...
  7. TCMontium

    Apistogramma mendezi pair or males

    The seller insists saying that the fish with the damaged tail fin is a female. The tail fin did not heal at all in more than a month of time, so I can not wait and show obvious the tail shape unfortunately. First 6 photos were taken at arrival on 18th of August, before opening the bag. Last...
  8. TCMontium

    Nannostomus mortenthaleri sexing

    Hello, I have read a few/lot of websites and book pages about Nannostomus mortenthaleri sexing and have seen some “male and female” photos too. Unfortunately, the information isn’t consistent. On Seriouslyfish website they say males should have white coloration on the dorsal fin, but no other...
  9. TCMontium

    Sitting and not eating after 2 day shipping

    I ordered 1 male and 2 female adult Apistos. The fish were supposed to come in 24 hours or less, but they came in 48 hours in summer heat (outside, daytime was at least 33C/91F and nighttime was at most 16C/64F). All 3 were in the same bag, with 2-3 liters of water and some sponge cubes. The...
  10. TCMontium

    Impact of diet on fertility and embryo mortality

    I have 2 spawning pairs of Apistogramma atahualpa and Apistogramma mendezi. Both spawned at least 4 times, maybe even 5-7 times in the last 3-4 months. Neither hatched fry from these spawns or if they did (which is unlikely), the fry never survived to the free swimming stage. I found a single...
  11. TCMontium

    Ooops, dropped to 5 ppm TDS

    Something very unusual happened. The water in one of my aquariums has the TDS reading of 5 ppm, which means the device is measuring a conductivity of approx. 9 microsiemens (my TDS-Meter has a seemingly inconsistent multiplier which seems to multiply higher conductivity water with bigger values...
  12. TCMontium

    Heavy breathing, half clamped tail fin, rubbing on wood/plants

    These are the only symptoms on my Dicrossus. Today morning, 12 hours ago (I live in EU) I noticed one sitting on a leaf, which just seemed like extra sleeping (since dicrossus sleep like that), but now all the dicrossus are showing those symptoms and even green neons are breathing heavyly and...
  13. TCMontium

    Tank mates for low conductivity and pH

    Hello, I am wondering which fish species other than Apistogramma, Dicrossus, Taeniacara, Ivanacara, Biotoecus, etc. are able to grow and live without health problems in low conductivity (0-100 microSiemens, preferably around 20-30 microSiemens [10-15 ppm TDS] ) and low pH (under 5.5, preferably...
  14. TCMontium

    Dicrossus sexual developement

    Hello, The title isn't quite fitting actually. I just wanted to hear about what the sex ratio of your dicrossus batches turned out to be and what you heard from other breeder's batches. And even the ratio you got from juveniles you bought and raised to adulthood. Right now I have 6 filamentosus...
  15. TCMontium

    Only Dry Season parameters

    Hello everyone, It is well know that the easiest time to collect fish in South America is the dry season (changes from around October to January depending on the area I guess) and all the temperature, pH and conductivity measurements in the habitats are done in this season as far as I can see...
  16. TCMontium

    Tannic, Humic, Fluvic, etc.

    Hello, I apologize beforehand if these questions were answered many times previously in these forums or other aquatic websites. Maybe I just couldn't find the right keywords to find any of those threads and articles. My questions are: - Since the Amazon Basin water (especially blackwater...
  17. TCMontium

    Detailed Apistogramma books

    I need recommendations for book with detailed information on Apistogramma (and other dwarf cichlid) species and/or their biology and/or their natural environment and/or any other detailed information. I started with buying Cichliden Atlas vol.2 by Uwe Römer, thinking that it would contain all...
  18. TCMontium

    Dicrossus female not a caring mom

    My female Dicrossus filamentosus had 2 or 3 clutches before with a male and all of them disappeared in maybe 5-8 hours. I had some Sturisoma and the male left in the aquarium back then and the TDS measure was 60 ppm, so, I thought one of these was the reason that the eggs were eaten. Or maybe...
  19. TCMontium

    Pairing different locals and color varieties

    Hello everyone, I should begin with an apology in case this subject was already discussed on these forums. I couldn't find much information about this subject (maybe that's because I didn't know the correct words to search for). My question is: What happens to the genetics and/or the...
  20. TCMontium

    What to use to lower ph to 4

    I have an aquarium with neutral sand, neutral filter material, some semi-dense planting, a couple of coconut caves and some dead plant matter in a corner. I used only RO water (ph 6.0-ish, "TDS" 20) for the whole one and a half years that this aquarium was set up. And finally, my water...
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