Stocking a 20 gallon tank! - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 15 Old 10-24-2010, 02:12 PM Thread Starter
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Stocking a 20 gallon tank!

So my brother just got a 20 gallon and he wanted help stocking it. This is what we have for our first pickup, is this ok?

1 Rainbow or Red Tail shark
2 Dwarf Gouramis



The tank does not have live plants. Will the sharks be fine with the gouramis?

My bettas-
1 Crown Tail Male- Star
1 Crown Tail Male Solid Red Blue Iridescent- Fuji


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post #2 of 15 Old 10-24-2010, 02:15 PM
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The dwarf gouramis sound like a good idea!! Im not sure but the shark mayneed a larger tank further down the line...
But nice choices...

26 Gallon Community:
5 Platies

4 Mollies

3 Guppys

1 Swordtail
11 Neon Tetras
1 Red Tailed Shark
Opaline Gourami
BN Pleco
Snakes-
Coral: Rat X Corn
CoCo: Rat

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post #3 of 15 Old 10-24-2010, 03:20 PM
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I donot recommend a shark for a 20g. Have a read of the fish profile for the Red Tailed Shark [click on the shaded name], the minimum tank size is given and it explains why. Also note these fish can be aggressive.

While you're at it, check the profile of the Dwarf Gourami, there are some concerns with this species.

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 #4 of 15 Old 10-24-2010, 03:47 PM Thread Starter
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Why should it have a bigger tank? It didnt give a reason just said lots of hiding spots

My bettas-
1 Crown Tail Male- Star
1 Crown Tail Male Solid Red Blue Iridescent- Fuji


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post #5 of 15 Old 10-24-2010, 05:33 PM
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Bigger tank because the Red Tailed Shark grows to six inches. Please read the full profile.
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post #6 of 15 Old 10-25-2010, 06:46 AM Thread Starter
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Quote:
Originally Posted by La Reina View Post
Bigger tank because the Red Tailed Shark grows to six inches. Please read the full profile.
Oh lol I already knew thatt. Which is why I was planning to do one red tailed shark, two dwarf gouramis, and maybe 2 other fish, a snail, and a shrimp

My bettas-
1 Crown Tail Male- Star
1 Crown Tail Male Solid Red Blue Iridescent- Fuji


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post #7 of 15 Old 10-25-2010, 12:25 PM
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Quote:
Originally Posted by Cutar View Post
Oh lol I already knew thatt. Which is why I was planning to do one red tailed shark, two dwarf gouramis, and maybe 2 other fish, a snail, and a shrimp
The minimum tank sizes mean the fish needs that tank practically from the first. Now, it is possible to temporarily keep such a fish in a smaller tank, but this is only temporary for several reasons.

First, fish grow throughout their lives, unlike humans. As it grows externally, it is also developing internally. If the surrounding water is not sufficient, the internal development can be deformed, what is called "stunting," and the fish will have endless health issues and proably early death. It is not fair to the fish to subject it to this.

Second, fish "personalities" are affected by their environment. Recent scientific studies have now confirmed what many of us have believed for years on this issue. Tank size--both the physical dimensions but also the water conditions due to those dimensions--affect the fish psychologically. Aggression is often much greater as a result. And this means the fish is stressed out by its lack of adequate "space", so it literally "takes it out" on the tank. Similar to you being locked in a small room permanently with no means of escape. That is what you do to the fish.

So, "temporary" means very limited time before the fish is placed in a suitably-sized tank so that it can properly develop and be normal and have a healthy, normal life. I would therefore not even consider such a potentially-large fish for a 20g unless you have a 4-foot tank ready. And by the way, a shrimp would not last with a shark in the same tank.

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 #8 of 15 Old 10-30-2010, 04:01 PM Thread Starter
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ok so what else can I put with the 2 dwarf gouramis that will work with a snail that is maybe around 3 or 4 inches

My bettas-
1 Crown Tail Male- Star
1 Crown Tail Male Solid Red Blue Iridescent- Fuji


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post #9 of 15 Old 10-30-2010, 04:23 PM
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It's tough to tell you that since the gouramis get that length, they can be aggressive, and your tank is pretty small you probably shouldn't get another fish that size. I'm rocking a 29g with 3 dwarf gouramis and a largish school of smaller rasboras. I'd suggest something like that.

Keeping big fish is for big tanks unfortunately.

30g SE Asian Tank
15 Lambchop Rasbora
2 Gold White Cloud Minnows
3 Dwarf Chain Loaches
2 Powder Blue Dwarf Gourami

55g Amazon Tank
2 Wild Type Angels
1 Marble Angel
1 Black Angel
1 Koi Angel
2 Bolivian Rams
14 Pristella Tetra
10 Dwarf Pencilfish
2-3 Twig Catfish (to come)
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post #10 of 15 Old 10-30-2010, 05:05 PM
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I also think rasbora would be good, the medium sized ones (which I suspect is what burnsbabe meant) of the Trigonostigma genus (the Harlequin Rasbora, Lambchop Rasbora, Hengels Rasbora). These are quiet fish and do not require a lot of swimming room; they must be in a group of 6. You can click on the names to see the profile of each species.

Or, some of the "smallish" characins (tetra) that also are not active swimmers. Check the characins profiles for ideas, making note of the individual fish needs in tank size, numbers, etc.

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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