tips and suggestions for a 2-3 gallon fish tank? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 44 Old 03-19-2007, 08:29 PM Thread Starter
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tips and suggestions for a 2-3 gallon fish tank?

Hi all!

I am interested in setting up a small 2-3 gallon fish tank on my desk. Which species of fish would be most suitable for such a small sized tank? How many fishes can live in a 2-3 gallon tank (and how big)?

I also understand that I should avoid undergravel filtration and instead replace it with a power filter. What type of gravel is suitable?

Would it be possible to raise fishes in such a tank and create a relatively easy environment for them to bred? Which types breed easiest?
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post #2 of 44 Old 03-19-2007, 08:43 PM

3 gallon tank, the best things to put here are shrimp, i wouldnt get fish since it will be hard to take care of requiring daily water changes and high awareness. 2 gallon tank and shrimp can work as well. You can successfully breed shrimp in a tank this small, with a mossy shrimp bed you can watch the little baby shrimp grow up and maybe feed them to your main tank or sell them to your lfs. I wouldnt suggest a betta, in a tank of this size they can be classified as "boring"

Use a sponge filter or get a pico filter
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post #3 of 44 Old 03-19-2007, 08:47 PM Thread Starter
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how about a 5 gallon tank, and no breeding with a good power filter?
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post #4 of 44 Old 03-19-2007, 08:50 PM
5 gallons could possibly fit 3, male only, guppies or one betta (male or female, doesnt matter) But you will need to do good frequent water changes. A long shallow tank is best for these fish.
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post #5 of 44 Old 03-19-2007, 08:55 PM Thread Starter
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how many fishes can this fit?

i'm just trying to get a good idea of how many gallons = how many inches of fish
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post #6 of 44 Old 03-19-2007, 09:08 PM
the general rule is 1 gallon = 1 inch fish but its not 100% bomb-proof. for example you wouldnt put a one inch fish in a 1 gallon tank as thats just too small for any fsh. once you get to a minimum tank size of 10g or something like that then the rule is pretty good. some folk swear by it, i just use it as a guideline but i wouldn't really exceed it.

its a 12g tank so you could go for a school of 10-12 neons or maybe 6-8 guppies perhaps. if youre looking for colour and activity then the neons would be a good bet. im a great fan of cories and so would maybe put 4 or 5 cories in there but a lot of folk arent keen on them for a species tank as they tend to be bottom dwellers therefore not as "exciting" as others.

alternatively if you were keen on a betta then he/she would fit nicely into a 12g tank with a couple of cories, shrimp or snails

let us know what you decide on :)
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post #7 of 44 Old 03-19-2007, 09:23 PM
that is a very good tank those eclipse systems. The inch per gallon rule is something i sort of follow, im more of a surface area and filtration guy, also the inch per gallon works only for long short fish and with tall fish, you need to calculate the mass of the fish.

How about a school of 6 neon tetras, 4 pygmy cories and possibly one or 2 male guppies? This is following the 1 inch per gallon rule. Using some planted tank gravel and get some hardy plants since that light permits the addition of plants but only hardy low light plants.
If you are a strong animal rights believer you can make the tank a betta tank (i find people who keep bettas in 10 gallon + tanks very nice since most of the time people buy them in 1/16 of a quart and expect them to live.) Also in a tank that big for 1 betta it will really stretch out its fins and swim very happily which most people love bettas for. Theres also a chance you can have a dwarf puffer species tank, there more of a challenge to take care of but can be fun little things to take care of. theres a website dedicated to dwarf puffers.
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post #8 of 44 Old 03-19-2007, 09:33 PM
too true!

its a misconception that bettas are boring fish - theyre not at all. its just that all too often they are not given the room to swim about and be entertaining to watch. like musho said, give them 10g+ and theyll stretch their fins and are beautiful fish. its really unfair to put them in small tubs as i wouldnt even call them tanks and expect them to swim about and "entertain us".

what kind of fish were you thinking about? were you more interested in a small school or one or 2 flashier fish?
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post #9 of 44 Old 03-19-2007, 09:40 PM Thread Starter
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Hi guys!

I think I'm going to settle with the Eclipse 6 gallon tank system. I'd love to get a bigger one, but I can't... :(. It's not about the gallon size but the space it occupies on a desk/table.

And the elipse seems pretty good because all the filtration and such is all under the hood so there's no protrusion and such! if you can recommend another tank please do so!

I suppose I can fit roughly 1/2 the number of fishes both of you recommended? Would I be able to raise two species instead of just one?
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post #10 of 44 Old 03-19-2007, 09:45 PM
My two bettas are crazy enough in their 1 gallons (they are getting upgrade soon, I just got a hand me down tank and gravel from a friend.) You could fit tetras in there! I dont follow the 1 gallon to 1 fish rule, or inch rule with the smaller ones. Regular and black neons both stay small, you can fit 18 into that tank at the max, they have small bioload and are very easy to care for. With bigger tetras, like black skirts then maybe 6-8 will be good, probaly less as they get 3"-4". I dunno, mine havent matured yet so im still guessing on their needed tank size. But 12 neons (black or regular) with some cories looks great, just enough movement at top and middle and bottom.
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