the native tank everyone wants to have!

[sbuse]

If you get anymore let me know, we might be able to help prevent the fungus, in the NC mountains there are populations of brookies that never get bigger than a few inches and are very temperature tolerant. I have thought about getting some of them at some point but right now the mountains are pretty far away.

i'll let you know if i do...i know i am interested in them dwarf paddlefish you have messed with...

i have a few streams around, the only thing now is space and chiller. no matter how temp tolerant a coldwater fish is it wont last in 90f+, though if you could get some and breed them you could have a good market. you would have to get an average life span of them at the higher temps, i don't see it as very long since they don't get that large. my geuss is that it would be like some salmon get big enough to spawn then die.

 

[Lepisosteus platyrhincus]

hmm, there is a stream on my inlaws private land that has some brooke trout that are dwarf(generation after genertaion in this small stream)

max size appears to be no bigger than 6"

 

[Moontanman]

i'll let you know if i do...i know i am interested in them dwarf paddlefish you have messed with...

i have a few streams around, the only thing now is space and chiller. no matter how temp tolerant a coldwater fish is it wont last in 90f+, though if you could get some and breed them you could have a good market. you would have to get an average life span of them at the higher temps, i don't see it as very long since they don't get that large. my geuss is that it would be like some salmon get big enough to spawn then die.

Some will some won't, some do some don't, there are populations of trout that at least survive temps in the high 70's every day but I wouldn't think they could be kept long term at those temps with out seriously shortening their lives. Even if you maintained the correct oxygen levels the high temps would mess with the fishes metabolism at the very least. BTW, most freshwater fish , even tropicals do better at temps in the mid to low 70s than the crazy high temps many people seem to be obsessed with keeping their fish at. Just like the trout that can tolerate higher temps, many tropical fish can tolerate being kept in the 80's and above but it seriously races their metabolisms and shortens their lives. I've kept cardinal tetras at temps in the low 70's and they lived for more than 5 years. In the wild they seldom live more than a year. moderation is a good thing to remember when keeping fishes and don't think that because a fish can tolerate low temps or high temps they require those extremes to stay alive...

 

[Illbuyourcatfish]

^Wow...That's very interesting!

 

[sbuse]

hmm, there is a stream on my inlaws private land that has some brooke trout that are dwarf(generation after genertaion in this small stream)

max size appears to be no bigger than 6"

this stream that i got these trout from is small, maybe 3' wide at the most, and all the fish seem to stay in this same pool year round. i took some of the bigger trouts for my tank, most of the population was less then 5" with many year classes presant. i would need to do more research to classify this population as dwarf do to me only finding this stream 1yr ago.

Some will some won't, some do some don't, there are populations of trout that at least survive temps in the high 70's every day but I wouldn't think they could be kept long term at those temps with out seriously shortening their lives. Even if you maintained the correct oxygen levels the high temps would mess with the fishes metabolism at the very least. BTW, most freshwater fish , even tropicals do better at temps in the mid to low 70s than the crazy high temps many people seem to be obsessed with keeping their fish at. Just like the trout that can tolerate higher temps, many tropical fish can tolerate being kept in the 80's and above but it seriously races their metabolisms and shortens their lives. I've kept cardinal tetras at temps in the low 70's and they lived for more than 5 years. In the wild they seldom live more than a year. moderation is a good thing to remember when keeping fishes and don't think that because a fish can tolerate low temps or high temps they require those extremes to stay alive...

i was only mentioning that high temp due to my tank getting that hot and thats what killed it. i know what you are saying on the high temp "problem" going around. i think that many people (like i did) were/are thinking that high temp =less sickness. i used to keep my tanks at 86F. i now don't have the heaters turned on in all my tanks with my ambiant temp of 75F. the tanks very from 70-78F week to week. fish are doing great and the plants are flurishing. i agree with you on the lower water temps. the only thing i was referancing with the coldwater sp. at high temps is that if someone were to keep trout, for ex., they should be ready with a chiller cause in the summer the tank would get to hot and kill the fish. as they need the cold water for all their body functions to work properly. were as a tropical fish can support the higher temps and still function so a chiller is not nessasary.

 

[Itsadeepbluesea]

The one thing you have to remember about biological creatures is structure dictates function. In these fish they have adapted to the temperatures that they normal inhabit. The protiens in their bodies have addapted to work at those specific temeratures. As the temperature increases those protiens tend to fold and unfold at a higher rate changing the structure. When this happens the "chapperone protiens" which help these protiens essential to life can't keep up with folding the protiens into the appropriate shape. Many of these protiens that change shape are essential to life and with changed shape there is a chang in function or even lack of function of normal bodily processes. Therefore if the temperature is too high for to long it results in death due to enough change in function essential to the fishes life. So in addition to the lack of oxygen the change in the natural protiens can lead to the death of a fish if it is in water that is to "hot" for to long.