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Breeding Paracheirodon simulans

Discussion in 'South American Tank Mates' started by rr16, Aug 23, 2017.

  1. rr16

    rr16 Active Member

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    Hi, does anyone know of anyone breeding P. simulans? I have just spawned mine so any advice would be greatly appreciated.

    Attached Files:

  2. Mike Wise

    Mike Wise Moderator Staff Member 5 Year Member

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    I don't understand. You already have spawned your False/Green Neons so you know how to do it. Do you mean how to raise the fry? If so, I can only tell you how I raised my Cardinal Tetras. Basically I just let them feed on microorganisms in a very large clump of Java Moss and on the sponge filter. The top of the tank was covered by floating plants, too, so there were many hiding places to avoid the school of adult Cardinals. Yes, I'm a lazy aquarist and don't try to raise every fry. I fed the adults BBS and once the fry got large enough they started eating BBS near the surface away from the adults. In this way I'd produce a dozen or 2 specimens every 6 months for the club auctions. If you want to raise larger quantities then I guess you'll need to produce infusoria cultures. Personally both species are commercially so common and relatively inexpensive that I doubt that it is worth the cost and effort.
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  3. rr16

    rr16 Active Member

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    Cheers Mike. It was just any advice on raising the fry really. I suspected it would be infusoria then BBS. I've already removed the adults and I have Paramecium and culture bbs every day as I have Copella, Trichopsis vittatus, Trigonostigma, Corydoras and some killi fry (plus a few random others).
    Cheers.
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  4. rr16

    rr16 Active Member

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    Here are some not very good pictures at 25 days old. Some of them have the green/blue stripe and eyes now. DSC_1176.JPG DSC_1177.JPG DSC_1178.JPG DSC_1180.JPG DSC_1181.JPG DSC_1183.JPG
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  5. Carlos

    Carlos New Member

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    Hi,
    this is the first time I see a sucessful attempt of breeding this species on the internet.

    Can you please specify what your conditions were? a lot of people try to breed simulans with no success. This species seems to have some weird secret as far as breeding is concerned.

    PH, GH, KH
    Water temperature
    Feeding
    Water changes
    Any leaves in the water releasing tannins
    Water current in the aquarium due to filtration/pump
    Plant cover
    Is it true about the eggs being sensitive to light?
    Size of the aquarium.
    Were there other species of fish in the aquarium?
    Do you know what triggers their instincts to breed?

    I use rainwater mixed with soft spring water and already got apistos to breed.

    Thanks in advance
    Last edited: Nov 28, 2017
  6. rr16

    rr16 Active Member

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    I have all this but need to write it up. Will try to remember soon. They are in to breed again but not being as serious this time, to see if they breed again
  7. Carlos

    Carlos New Member

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    Thanks!
  8. rr16

    rr16 Active Member

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    Below is my experience 1st time of spawning them. Not sure if the eggs are light sensitive or not, but I left the lights on their usual cycle and got 40 fry. The water was strongly stained by this point with tannins. They are currently in water of a lower pH and no signs of spawning. Over the next few days I will probably raise the pH by doing a few fresh water changes with R. O. then maybe try adding homemade blackwater and see what happens. I suspect water changes and increased organic matter may simulate the rainy season.

    Hardness is pretty much non-existent and they are in a 12 x 18inch tank with a simple slow sponge air-driven filter and spawning mops and mesh on the base.

    Put in on evening of 12/08/17
    R. O. Water + alder cones + extract
    Temp. ~25°C
    pH 6.7

    Day 2, pH dropped to 6.4
    Water tea coloured
    Heater added to up temp.
    Fed mosquito larvae and bbs and micro/banana worm.

    Day 3
    Temp. 26.8°C
    pH 5.8?

    Day 4
    Fed nems, bbs, frozen daph and flake
    Topped up with about 10% cooler water
    Temp. 26.1?
    pH 6.0

    Day 5
    Fed nems, flake and bbs
    Temp 26.8°C
    pH 6.3
    Added about 30 oak leaves

    Day 6
    pH 5.9
    Temp 27.1°C
    TDS 25ppm


    Day 7
    pH 6.1
    Temp 26.8
    Thunder storm
    Topped up with approx 10% R. O.

    Day 8
    pH 6.2
    Temp. 26.8

    Day 9
    pH 6.2
    Temp 26.8

    Day 10
    pH 6.3 - added oak leaf extract
    Temp 26.4

    Day 11
    pH 6.1
    TDS 30ppm
    Temp 26.8
    Added more oak leaf extract - water went cloudy
    11PM - Temp 27.2 Possible spawning activity - chasing through spawning mops side by side
    Check pH in morning and remove adults.

    Day 12
    Found about 6 eggs under the mesh gauze.
    Took adults out of the tank and put in mixed grow out tank
    Temp 27.4
    Water is highly stained - made seeing the adults to catch them difficult
    pH - 5.9
    TDS 35ppm

    Day 13
    Saw 2-3 fry hatched out on base of aquarium.

    Day 16 - fry consumed most of yolk sac
    pH gone back up to 6.5
    TDS 37ppm
    Temp 27.4 (27/08/17)

    Day 17
    Temp 27.8
    pH 6.5

    Day 20
    ~ 20 fry freeswimming - tending to move towards the light after lights out.
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  9. Carlos

    Carlos New Member

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    How many fish did you have in the aquarium, I'm assuming the more the better, or am I wrong?. I'll try to mimic your conditions with rainwater and oak leaves...
  10. rr16

    rr16 Active Member

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    I had three. I think only two were involved in spawning though.
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