Pearl and Blue Gourami - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 23 Old 05-28-2011, 10:33 AM
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I guess if it were me, I would not risk having multiples in a 55 gallon. I too started out with 2 very small opaline and 2 very small Gold Gourami. One of the Gold was very aggressive and killed one of the Opaline and the other Gold. I removed that aggressive Gold Gourami and was left with the one Opaline Gourami. That fish is the most gentle easy going fish I have. He gets along with everyone even the brand new Guppy fry that buzz around him like a swarm of mosquitoes. He doesn't eat them like I hoped he would.

In speaking to many other people they noticed that their Opaline Gourami seemed more peaceful as well. I don't know if that is over all or just a few of us that happened to get lucky and have peaceful Opaline's. Anyone else notice that?

I had wanted to add a Dwarf Flame Point Gourami as well but won't take a chance until I get another tank. That way, if it doesn't work out, I can move the Flame point out of that tank. I don't want any of my fish getting hurt or living in fear in their tank. I prefer a tank where everyone is calmly swimming about and all is peaceful.

Based on what Byron just said, I wanted to add that mine were all in a 4 foot long tank with a lot of hiding spots and that still did not work. I wouldn't risk it but that is me.
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post #12 of 23 Old 05-29-2011, 10:15 PM
gourami mixing

okay, so that is a no go. What if I introduced the 3 pearls and a smaller blue at the same time. The main thing I'm thinking is that since blues are more aggressive a small one might mix with pearls better, or is that just not how it works?
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post #13 of 23 Old 05-30-2011, 10:36 AM
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okay, so that is a no go. What if I introduced the 3 pearls and a smaller blue at the same time. The main thing I'm thinking is that since blues are more aggressive a small one might mix with pearls better, or is that just not how it works?
Each fish species has evolved overs thousands and perhaps millions of years. It is "programmed" by nature with inherent traits. For reasons that are sometimes obvious and other times not, different fish within a species can behave somewhat differently. But there is no way to really second guess this, and the safest course is to assume the fish will be true to its nature.

Even if actual "physical" interaction is not obvious, the fish are sending out chemical signals, via pheromones, and other fish read these. This alone can cause great stress, as the other fish recognize danger is always present. Think of it like this: A vicious dog is chained to the wall in a small room, and a cat is placed in the room. The dog cannot get at the cat, but the cat will be terrified just by the dog's presence. That sort of stress is felt by fish in such cases. And in the aquarium, they are in a "closed room" with no way out. That is not the best environment.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #14 of 23 Old 06-01-2011, 02:36 PM
more of the same

I already one gold gourami in my tank now. I know if I get more more, even of the same species, there will be some fighting/stress. Do you also recommend against adding more of the same species?
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post #15 of 23 Old 06-01-2011, 04:53 PM
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I already one gold gourami in my tank now. I know if I get more more, even of the same species, there will be some fighting/stress. Do you also recommend against adding more of the same species?
The tank size determines this. Obviously the species lives in close company in nature and spawns, or it would be extinct. But in their habitat there is space for the females and submissive males to get away from the dominant male. There is also the scientific evidence now that tank size has a role in aggression. The smaller the volume, the more aggressive some fish will become. This is perhaps linked to pheromones, chemicals fish release for various reasons and other fish read them. Some fish actually communicate by such means.

This is a 55g tank, 4 feet, so that is space for a male and 2-3 females. Lots of plants to provide "out of sight" areas for the females will help a lot.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #16 of 23 Old 06-01-2011, 05:41 PM
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This is a 55g tank, 4 feet, so that is space for a male and 2-3 females. Lots of plants to provide "out of sight" areas for the females will help a lot.
I hijacked this thread, sorry for that. This is actually a 46 bowfront tank.

I know I keep asking this question in different ways (it's because I love the look of gold and pearl gouramis), but if I have 3 females (gold,blue, opal) and I found a more aggressive male Pearl, could that work. the LFS often stores the pearls with the blues.

To your previous point, the LFS has a person who has a lot of experience with gouramis; he suggests overstocking gouramis to reduce aggression. It sounds like you disagree ... yes?
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post #17 of 23 Old 06-01-2011, 06:14 PM
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I hijacked this thread, sorry for that. This is actually a 46 bowfront tank.

I know I keep asking this question in different ways (it's because I love the look of gold and pearl gouramis), but if I have 3 females (gold,blue, opal) and I found a more aggressive male Pearl, could that work. the LFS often stores the pearls with the blues.

To your previous point, the LFS has a person who has a lot of experience with gouramis; he suggests overstocking gouramis to reduce aggression. It sounds like you disagree ... yes?
I may move this mini-thread to a new thread after this.

Yes I disagree. All gourami are territorial, comparable in this respect to cichlids. Fish stores overstock most of their tanks, and this affects the fish in it; they hope it is temporary, and the fish sell. But it is not healthy for the fish, and I trust you would agree with me that our first goal as aquarists should be to provide our fish with as healthy an environment as we can. They deserve no less. A permanent (for the fish who will likely end its days in our aquarium) environment should replicate the fish's natural habitat because this will allow the fish to "be itself" and that is not only healthy for the fish but rewarding for us in observing their sometimes incredible behaviours and interactions.

You cannot reduce or remove the fish's aggressiveness. You can force an un-natural environment on the fish but what this is really doing is stressing the fish terribly. Aggressive fish need to be aggressive, it is their instinct, and in a proper environment they will be. But crammed into a much too small space with other fish that also need to be dominant is not healthy. Stress weakens the fish's immune system, and this brings on innumerable health problems that otherwise would not be seen, and it shortens their lives. This appies to the aggressor as much as to the other fish.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #18 of 23 Old 06-01-2011, 06:17 PM
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I trust you would agree with me that our first goal as aquarists should be to provide our fish with as healthy an environment as we can. They deserve no less.
absolutely. So, you said max 4 for a 55. How many for a 46 do you think?
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post #19 of 23 Old 06-01-2011, 06:21 PM
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absolutely. So, you said max 4 for a 55. How many for a 46 do you think?
It is the visual space more than the volume to some extent, though they are related. A group of 4-5 gourami should be OK, just one male and the rest females.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #20 of 23 Old 06-01-2011, 10:19 PM
just to be perfectly clear, and I'm pretty sure I know the answer, you would recommend against my suggestion of 3 female blues and a male pearl ... even if I could pick out a relatively aggressive one.
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