Temperature Ranges

[SJ2K]

Just wanted to know what the absolute highest and lowest temperatures that cory's can tollerate? I know they say around 24 but was wondering what they can go up to without being too uncomfortable

Thanks

 

[jollysue]

Which species? For a higher temp Cory, try C. sterbai. They can tolerate and even thrive I understand to perhaps 28. But a lot depends on their breeding. I keep them happily around 26 or 27.

 

[Coryman]

There are a few species which are considered warm species and the top of the list is C. gossei and possibly C. seussi, these will quite happily live at 30ºC (86ºF). At the other end of the scale there are the cool species, which include C. paleatus, C. longipinis, C. undulatus and C. macrosteus, these are happy at temperatures around 17ºC (62.5ºF).

Ian

 

[jollysue]

Ian: This post bothered me as I am keeping my C. gossei with the pandas, duplicarus, weitzmani, and cw028. I am getting ready to move tanks and it is the right time to also move fish groups. My C. gossei are at about 75 degrees and seem very happy. They are not at all acting stressed or unhappy. But I checked planetcatfish and the suggested optimal temp range for the C. gossei and C. suessi is 72 degrees to 79 degrees.

What should I do? They seem to be happy with their mates. The suessi likes the CW028 very much too.

 

[ICEEGRL]

All I can say is I have had a couple of the above mentioned cooler water fish for a long time, and mine do not like it when the temp goes below 72. They hide, they lose their color, stop breeding, and get sick. Mine are very active, and breed like crazy at 75 to 80. Mine tend to like it best at around 78. I really think it depends on the fish. Some fit the mold and some don't. We can say what they should like or do best with, but it may not always hold true for all of them.

 

[jollysue]

I have had the same experience with the lf peppers. I lowered their temp and they were not as happy and were very sluggish. I think sometimes aquarium bred fish are adapted to the conditions they were born and bred in.

That does not answer to the gossei. And although my gossei and duplicarus, also, get all jiggy and I believe I have harvested eggs from them, I have not gotten any fry to a stage that I could see any gossei or duplicarus. I have wondered if the temp they are in (mid 70's--high for duplicarus and low for gossei) could be affecting the hatching and fry?

 

[SJ2K]

I keep in Julii in around 26-28c and they seem happy enough

 

[jollysue]

Yeah, I believe that should be about optimum for juliis.

I don't even keep my Bettas at 30. With so many tanks in a room, my tanks determine the roon temp, so everyone has to be close to the same tank temp. So far I have had to keep everyone on the low side of 22/72 because I am a low temp creature and the high 27/78 would knock me to my knees. With my new fish room to be, I can set most at 25/75 and reduce or raise some tanks according to their breeds. But like I said, for most in one room it is going to even out because of the room temp.

Actually my electric bill should go down because I won't have the tanks fighting with the air conditioner. Last winter I never turned on the heater!

I hope I got the Centagrade temps sorta close to right. I am here with a termometer translating farenheits into centagrades! It's like using a tourist book to translate.

Did you ever find a sign of the lost Cory?

 

[SJ2K]

Nope, officially vanished, not even a flake of skin ...Got my other 2 shortly after though, the group is far more active and less edgy now though and no ones gone missing!...Yet

 

[arvlyn]

I hope I got the Centagrade temps sorta close to right. I am here with a termometer translating farenheits into centagrades! It's like using a tourist book to translate.

Oh I hear ya on that one...I do that all the time between F vs. C and gallons vs. liters. Then there's Latin names vs. common names... Geez!

 

[jollysue]

whole new language--and the spelling on some of the classification names!!!!! :stupid:

But little by little it sinks in--well after about 3 years I am beginning to get temp translation. I still am imagining 2 ltr sodas for ltrs though. I just treat Imperial gallons and usg the same with wiggle room. B)

 

[Coryman]

Ian: This post bothered me as I am keeping my C. gossei with the pandas, duplicarus, weitzmani, and cw028. I am getting ready to move tanks and it is the right time to also move fish groups. My C. gossei are at about 75 degrees and seem very happy. They are not at all acting stressed or unhappy. But I checked planetcatfish and the suggested optimal temp range for the C. gossei and C. suessi is 72 degrees to 79 degrees.

One thing to remember is that the majority of C. aeneus, paleatus, panda, trilineatus and even sterbai are now being farm bred and as such these strains have evolved to the conditions provided for them.

The temperature references I have given are for wild caught fishes and in the main are fairly accurate, having said that most of this information is gathered when hobbyists visit various areas in the dry season, leaving us to guess what the parameters are when the rains come. Like I said many will disagree, as have already done so, with the temperatures I have given. Also most of the temperature ranges given in the species pages on Planet Catfish are taken from Fish base, which are at the very least just generalisations. Most of the temperatures quoted on Corydoras world have been acquired from eminent hobbyists who have visited many areas and collected many Cory species.

Ian

 

[jollysue]

In my case, I have very few farm bred Corys. Most are WC or bred by hobbyists such as Frank. Of course I understand that aquarium bred fish are more adapted to their particular tank upbringing and can actually be more difficult to aclimate to different tank conditions. Whereas WC are use to water and weather changes during the seasons. So it makes sense that spawning would be best done by imitating their wild conditions or the aquarium where they were bred. Well I am beginning to understand that. Thanks for the post. I gleaned a little more insight into my fish.