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Thread: Discus killing tank mates

  1. #1
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    Default Discus killing tank mates

    My discus fishes killed off cardinal tetras (~1.5” size) and clown loaches (~2.5” size) that I had as tankmates. I had 6 discus all 4-5” along with 15 cardinals and 5 clowns in my 75g. I was planning of moving the loaches to a larger tank that I am building but now am left with just 3 cardinals with rest all have been killed by the discus one by one.
    I would still like to have some schooling fishes with my discus. My tank is around the discus so want fishes that go well with them and some color.
    Suggestions please!

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    Default Re: Discus killing tank mates

    I had the same problem with neons... they started to slowly disappear. I have two lemon tetras now with mine and plan on getting 4 or 5 more. they are too large to be killed and eaten by the discus. I also plan on doing a school of congo tetras but most people here will tell you not to do congos. I have one now and it seems fine with the discus

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    Default Re: Discus killing tank mates

    I've only had Discus for two years so not an expert but did tons of research and I have some doubts about them killing your fish.No offense.Have you observed this behavior yourself or are you finding dead fish and assuming it was the Discus? Discus are slow moving and large and most tetras can easily avoid them.Are you keeping your Discus well fed with plenty of meat and fish protein?Regular water changes?I have friends who have tanks with Discus and cardinals and neons and have never observed this behavior...Just curious

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    Default Re: Discus killing tank mates

    for myself I did not observe the discus actually killing the neons. just coincidence that they started to disappear then and he is the only fish big enough minus the botia. I never saw any of the dead fish but neons are small so no surprise there

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    Default Re: Discus killing tank mates

    I was puzzled with my fishes going missing, tore my tank and filters up in case they were hiding or Getting sucked in but nothing showed up. During my water changes I noticed something that looked like remains of tail fins.
    Then one night I saw my discus chasing one of the cardinals and continuously nipping at it until it was seriously injured and then started eating it. I guess the remains are cleaned up by the amano shrimps .

    So yes, I have confirmed at least one of my fishes became discus meal!

    Still open to suggestions for tank mates ppl

  6. #6
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    Default Re: Discus killing tank mates

    Rummy nose seem to tolerate the discus temps fine when I have had them with Discus. The discus havent bothered them.

    Ive known people to keep congo tetras with them also... a friend of mine had a school of wild greens in a 125 gal tank with a small school of congos.

    Personally I dont like having tetras with discus as they are reservoirs for parasites. Due to their sensitivity to meds people often skip qts on them or use meds at half dose... a recipe for disaster.


    Al
    Last edited by brewmaster15; 03-16-2019 at 04:06 PM.
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    Default Re: Discus killing tank mates

    I think you’re overstocked, honestly. My personal belief is that the old 1 Discus per 10g recommendation needs rethinking, especially when you add tankmates and decorations. Just five adults in a 75 is plenty, with no tankmates. But, that’s just me.

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    Default Re: Discus killing tank mates

    My neon tetra is gone by discus too and then i choose silver tip and other bottom fish such as Cory catfish and Royal whiptail catfish be my discus mates. After that no ones dies.

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    Default Re: Discus killing tank mates

    Quote Originally Posted by bossanova View Post
    I think you’re overstocked, honestly. My personal belief is that the old 1 Discus per 10g recommendation needs rethinking, especially when you add tankmates and decorations. Just five adults in a 75 is plenty, with no tankmates. But, that’s just me.
    6-7 discus in 75g is crowded a bit once fully grown - these are temporarily housed while I get my act together to build the large tank. Though some folks have suggested that 6-7 in a 75g helps with aggression control.

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    Default Re: Discus killing tank mates

    Quote Originally Posted by brewmaster15 View Post
    Rummy nose seem to tolerate the discus temps fine when I have had them with Discus. The discus havent bothered them.

    Ive known people to keep congo tetras with them also... a friend of mine had a school of wild greens in a 125 gal tank with a small school of congos.

    Personally I dont like having tetras with discus as they are reservoirs for parasites. Due to their sensitivity to meds people often skip qts on them or use meds at half dose... a recipe for disaster.


    Al
    Thanks Al, suggestions on tank mates other than tetras?

  11. #11
    Registered Member danotaylor's Avatar
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    Default Re: Discus killing tank mates

    More discus

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