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Fish That Can Live In An Unheated Tank ?


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#1 Acipenser

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Posted 04 October 2008 - 04:08 AM

I know about gold fish and white clouds and that danios are hardy but what else can live in a unheated tank in a room that remains around fluctuates between 69 and 75 deggrees ?

#2 kribensis12

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Posted 04 October 2008 - 04:17 AM

Well, not many. Im sure Guppies wouldnt mind a tank in the mid 70's. But other than that, native Midwestern US fish. Also, you need a big tank for Midwestern fish, and a big tank for Goldfish.

#3 Acipenser

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Posted 04 October 2008 - 04:20 AM

I have a 25 gallon with 2 gold fish a few lepoard danios and a few white clouds, I want to upgrade it to a 55 gallon soon, and add some more white clouds to about 20, was hoping i could add a cray fish as long as it leaves my gold fish alone .

Edited by Acipenser, 04 October 2008 - 04:21 AM.


#4 Corleone

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Posted 04 October 2008 - 04:22 AM

Rosey minnows. Mine seem to be mostly bottom-dwelling, as opposed to white clouds and danios, so they'll complement each other well in a tank. They're sold as feeders more often than pets, which is where mine came from.

There's also some hillstream loaches that come from coolwater streams.

Edited by Corleone, 04 October 2008 - 04:38 AM.


#5 wendywc

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Posted 04 October 2008 - 05:30 AM

When I was tossing around the idea of having a coldwater setup myself, these were on my shortlist.

bitterlings
flagfishes
dojo/weather loaches

#6 Scotty001

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Posted 04 October 2008 - 07:25 AM

My geography is rubbish im afraid so not too sure on seasonal temp changes. depending on the ambiant temp, of where you are living you may be able to keep some tropicals still.

during the summer (if you can say the uk has a summer) the heaters in my tanks get turned off as the ambiant temp in the room and the water in the tank stay at 24c in some cases my room can get to 30+ and im looking to cool the tank down.

it may be a case of where you live u may be able to run a tank without heaters dependant on the
temp ratio you have between 75f and 60f if it is more often 75f region then there are a few tropicals that are happy in that temp and droping temp down a little shouldnt be too bad for them so long as it isnt a sudden drop / incrase.

if the fish tank is in a room where people are in alot and have tv's hi-fi's computers etc etc that are on all these devices emit a heat scource and heat the room up a little too. as well as your central heating during the winter months. you could try if bored one day to turn the heting off on your tank and monitor the temp each hour to see what it does.

you may get away with no heating during the day and heater on timer to come on at night. if your still looking to keep some tropicals.
Scott

#7 Phage

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Posted 04 October 2008 - 07:53 AM

What about Beaufortia kweichowensis like someone suggested. They are really beautiful.
http://www.fishprofi...rofiles/706.htm
http://www.loaches.c...n-the-fast-lane

Edited by Phage, 04 October 2008 - 07:55 AM.


#8 three-fingers

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Posted 04 October 2008 - 08:12 AM

Peppered corydoras Corydoras paleatus.
Rosy barb Puntius conchonius.
Buenos Aires tetra Hyphessobrycon anisitsi.
Bloodfisn tetra Aphyocharax anisitsi.
A lot of the Garra species.

As suggested, hillstream loaches too, though they have other specific requirements that you should research if your interested :).

#9 VampirePlec

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Posted 04 October 2008 - 09:53 AM

paradise fish do well in cooler tanks as well - but arnt he best community fish.

#10 Inchworm

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Posted 04 October 2008 - 01:19 PM

Hi Acipenser :)

Have you considered corydoras? There are many cory species that would do fine in that temperature range.

Just to name a few, among the more readily available species, are C. aeneus (bronze or albino) C. paleatus, C. panda. All are lively and active and are good citizens of any peaceful community tank.

If you can raise the lower end of the temperature range just a couple of degrees, it would make the environment comfortable for many other lovely species of corys too.

#11 Butch

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Posted 04 October 2008 - 04:10 PM

Well, not many. Im sure Guppies wouldnt mind a tank in the mid 70's. But other than that, native Midwestern US fish. Also, you need a big tank for Midwestern fish, and a big tank for Goldfish.


Since when midwestern fish need big tank? You don't know about native fishes...

There are tons of native species that can live in 20gal more than gamefish. Darters, scuplins, mudminnows, shiners, chubs, dace, minnows, stoneroller, topminnows, killifish, mosquitofish, sticklebacks, dwarf sunfish, pirate perch, madtoms and trout-perch are perfect for 20 gal tanks.

Red rosy minnows are another good fish for small tanks. Goodeids likes their water cool.

#12 Syphoniera

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Posted 04 October 2008 - 04:54 PM

Well, not many. Im sure Guppies wouldnt mind a tank in the mid 70's. But other than that, native Midwestern US fish. Also, you need a big tank for Midwestern fish, and a big tank for Goldfish.


Since when midwestern fish need big tank? You don't know about native fishes...

There are tons of native species that can live in 20gal more than gamefish. Darters, scuplins, mudminnows, shiners, chubs, dace, minnows, stoneroller, topminnows, killifish, mosquitofish, sticklebacks, dwarf sunfish, pirate perch, madtoms and trout-perch are perfect for 20 gal tanks.

Red rosy minnows are another good fish for small tanks. Goodeids likes their water cool.




Brilliant suggestions.
I've got a Central Mudminnow in a 25 gallon; beautiful fish which max out at 4 inches; being torpedo-shaped, not so bad.
I'm always surprised so few people conside native fish of that type for cool-water tanks.
But then again, I'd never heard of them until I dug my little guy out of a mudpuddle in a friend's ditch...

#13 peter22UK

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Posted 04 October 2008 - 07:23 PM

There is an article on this in this months Practical Fishkeeping (UK)

it says u can keep rosey barbs in cold water ???

#14 jourdy288

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Posted 04 October 2008 - 11:23 PM

Most fish native to the US/Canada are good for unheated.

#15 three-fingers

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Posted 04 October 2008 - 11:48 PM

There is an article on this in this months Practical Fishkeeping (UK)

it says u can keep rosey barbs in cold water ???

Not read it, but yes you can :good:. Some people keep them outdoors in summer, even here in Scotland, along with danios.

#16 OldMan47

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Posted 06 October 2008 - 01:51 AM

Another group that in general tolerates quite cool water is the goodeids. There are exceptions but most will do fine at goldfish temperatures. All of mine are kept in unheated tanks for their health. They seem to do better when the temperature moves around somewhat. A very nice but very small fish that does well in cool, not cold, water is heterandria formosa.

Edited by OldMan47, 06 October 2008 - 01:51 AM.


#17 fish48

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Posted 06 October 2008 - 11:46 PM

I know about gold fish and white clouds and that danios are hardy but what else can live in a unheated tank in a room that remains around between 69 and 75 deggrees ?

all livebearers and many tropical fish can live in tanks between 69 and 75 deggrees.

#18 ally86ozzy

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Posted 07 October 2008 - 12:27 AM

Well, not many. Im sure Guppies wouldnt mind a tank in the mid 70's. But other than that, native Midwestern US fish. Also, you need a big tank for Midwestern fish, and a big tank for Goldfish.


NAWT TRUE! well nawt true for 1 type i kno of anyways. mosquito fish. theyre tiny liveberarers, depending on type. mine r gambusia affinis, and the biggest they grow is 1.5 in 4 female, and males 1 in. i believe u can find em in the midwestern us, like texas and such. i hav two in a 10 gal, no heater. im nawt sure if theyre tropicals or nawt, but even in the winter my house stays about 70ish degrees. thats wut i suggest. theyre very small active fish, but at the pet stores theyre commonly sold as feeder fish :-( wahhh. but theyre real cuties! :) -heart :wub: , ally86ozzy

#19 kevinthecow

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Posted 07 October 2008 - 12:55 AM

Get weather/dojo loach/es! They're awesome and their temperature is around 77! :D They can live in tropical tanks but in coldwater, its more likely to live longer. :D

#20 fish48

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Posted 07 October 2008 - 07:50 AM

guppies do well in cooler temperatures i keep mine at 68 f - 70 f when Kept at these conditions i find them to be moore hardier and less prone to diseases .

#21 Jazzzz

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Posted 07 October 2008 - 09:01 PM

I f you have goldfish with any fish like guppies, white clouds, danios, rosy barbs they will be eaten eventually no matter how peacful the goldfish seems towards them garanteed.

#22 Butch

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Posted 07 October 2008 - 09:10 PM

I f you have goldfish with any fish like guppies, white clouds, danios, rosy barbs they will be eaten eventually no matter how peacful the goldfish seems towards them garanteed.


That's full of rubbish about goldfish eat rosy barbs as rosy barbs are too big to be eaten by fullgrown goldfish as the barbs can reach more than 5 inch long. Please read carefully the first third post that he's probably not keeping goldfish with minnows and danios. Fancy goldfish can't catch danios and healthy minnows but maybe an unlucky guppy.

#23 three-fingers

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Posted 07 October 2008 - 09:15 PM

all livebearers and many tropical fish can live in tanks between 69 and 75 deggrees.

That "all livebearers" part really, really isn't true :blink: .

NAWT TRUE! well nawt true for 1 type i kno of anyways. mosquito fish. theyre tiny liveberarers, depending on type. mine r gambusia affinis, and the biggest they grow is 1.5 in 4 female, and males 1 in. i believe u can find em in the midwestern us, like texas and such. i hav two in a 10 gal, no heater. im nawt sure if theyre tropicals or nawt, but even in the winter my house stays about 70ish degrees. thats wut i suggest. theyre very small active fish, but at the pet stores theyre commonly sold as feeder fish :-( wahhh. but theyre real cuties! :) -heart :wub: , ally86ozzy

They can get a little bigger than that, maybe you have a different species, or maybe it just depends on the population of fish...but I've seen them bigger than that. The only thing I don't like about them is apparently they are pretty aggressive. I've never kept them myself to see if they are though.

#24 Butch

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Posted 08 October 2008 - 02:47 AM

all livebearers and many tropical fish can live in tanks between 69 and 75 deggrees.

That "all livebearers" part really, really isn't true :blink: .

NAWT TRUE! well nawt true for 1 type i kno of anyways. mosquito fish. theyre tiny liveberarers, depending on type. mine r gambusia affinis, and the biggest they grow is 1.5 in 4 female, and males 1 in. i believe u can find em in the midwestern us, like texas and such. i hav two in a 10 gal, no heater. im nawt sure if theyre tropicals or nawt, but even in the winter my house stays about 70ish degrees. thats wut i suggest. theyre very small active fish, but at the pet stores theyre commonly sold as feeder fish :-( wahhh. but theyre real cuties! :) -heart :wub: , ally86ozzy

They can get a little bigger than that, maybe you have a different species, or maybe it just depends on the population of fish...but I've seen them bigger than that. The only thing I don't like about them is apparently they are pretty aggressive. I've never kept them myself to see if they are though.


Actually fish48 is right, all livebearers do well between 69 to 75 degrees, it will slow their breeding and live longer instead of burn out quickly.

Mosquitofish sizes are varied in different populations. 1.5 inch long sounds right for average mosquitofish, and its possible that her female is just young. But few huge females are found. There is one population that the females are smaller than normal females and the same population's males are even smaller! (.5 inch long) thanks to the plant factory dump the chemicals in the river cause the mosquitofish mature early.

#25 Jazzzz

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Posted 08 October 2008 - 05:19 PM

I f you have goldfish with any fish like guppies, white clouds, danios, rosy barbs they will be eaten eventually no matter how peacful the goldfish seems towards them garanteed.


That's full of rubbish about goldfish eat rosy barbs as rosy barbs are too big to be eaten by fullgrown goldfish as the barbs can reach more than 5 inch long. Please read carefully the first third post that he's probably not keeping goldfish with minnows and danios. Fancy goldfish can't catch danios and healthy minnows but maybe an unlucky guppy.


sorry i presumed that rosy barbs were the same size if they get that big you right :blush: . My fancy goldfish caught and ate 2 minnows at night which were very healthy and quick.

I have a 25 gallon with 2 gold fish a few lepoard danios and a few white clouds, I want to upgrade it to a 55 gallon soon, and add some more white clouds to about 20, was hoping i could add a cray fish as long as it leaves my gold fish alone .


He is keeping them together

Edited by Jazzzz, 08 October 2008 - 05:19 PM.


#26 three-fingers

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Posted 08 October 2008 - 08:11 PM

Actually fish48 is right, all livebearers do well between 69 to 75 degrees, it will slow their breeding and live longer instead of burn out quickly.

Are you seriously saying that about all livebearers?
Or do you just mean guppies, platies, mollies, mosquito fish etc...

Because all livebearers really don't do well between those temperatures.

#27 fish48

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Posted 08 October 2008 - 08:57 PM

Actually fish48 is right, all livebearers do well between 69 to 75 degrees, it will slow their breeding and live longer instead of burn out quickly.

Are you seriously saying that about all livebearers?
Or do you just mean guppies, platies, mollies, mosquito fish etc...

Because all livebearers really don't do well between those temperatures.

so which are the livebearers that Won't live live between 69 to 75 degrees.

#28 three-fingers

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Posted 08 October 2008 - 11:41 PM

Loads of species, some even prefer slightly higher temperatures than regular community fish. Lot's of different fish are livebearers...from all over the world in many different climates.
While things like guppies can live in cooler temperatures and thrive because they are hardy and their range covers subtropical areas, this really isn't the case for all livebearers. So many are found in places where the temperature is quite a bit above 75* for most of the year....why keep them in cooler temperatures?

Those fish all do about as good in cooler water as most other tropical community fish do - they can survive cooler temperatures, but year round it can cause issues...which is why people nowadays keep tanks at warmer temperatures than they used to, it makes the fish easier to look after.

If your going to recommend 'all livebearers' for unheated tanks, you might as well recommend all the common tropical community fish ;).

#29 kevinthecow

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Posted 08 October 2008 - 11:43 PM

Oh, guppies. Beautiful fish. Just make sure you acclimatize them for about 5 minutes or they'll stress out. (Stress Coat conditioner, too;))

#30 Butch

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Posted 09 October 2008 - 01:55 AM

Actually fish48 is right, all livebearers do well between 69 to 75 degrees, it will slow their breeding and live longer instead of burn out quickly.

Are you seriously saying that about all livebearers?
Or do you just mean guppies, platies, mollies, mosquito fish etc...

Because all livebearers really don't do well between those temperatures.


It appeared that you don't know All of livebearing species.....all livebearers do well between 69 to 75 degrees which is your average room temp, why you made it into big deal? You just don't know the species. If so name one species that don't do well at room temp...come on tell me what's one that don't do well at 69-75 degrees. Fish48 is expert on livebearers, trust me.




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