Can Coldwater Fish Thrive In Heated Tanks?

[fishguy2727]

There is only one species of goldfish, Carassius auratus. There are many breeds, just like dogs, including: oranda, black moor, telescope, ranchu, etc. These are still all the same species of goldfish.

I think people are exaggerating the temp difference. As stated multiple times some houses have a room temp that is the same as tropical tanks, so getting caught up over a degree or two is a waste of time and overthinking things.

Goldfish are NOT any messier than any other fish of the same mass at the same temp. There is nothing magical about them that makes them any messier. One goldfish is no messier than the same mass of neon tetras at the same temp. The factors that affect waste production are: mass of fish, temp of water, mass of food fed.

 

[onidrase]

even tho most household room temps vary from 19-25? Goldfish are scavengers so they will always find left over food thats bound to be in the tank. Cold water or not i've found water changes in a cold tank should be done more regulary than warmer tanks anyway. Like i said so far no problems and it's all looking good.

Well, yes, even though household room temps very from 19-25. They'll eat and poo more when the room is warmer than it will when it's colder. It's a fact, not a debatable discussion, that their metabolism rises as the temperature does. And with that, more attention needs to be paid with the tank. Sure, they'll scavenge, but the scavenging isn't the main food source, and feeding enough to have food laying around on the ground for them to eat later isn't a very good idea either.

For example, when I had an bristlenose pleco in my tank, it was a poo machine, I had to constantly vacuum the sand to keep it looking like sand, and to keep the water clean and the fish happy. However, when the pleco was rehomed, I haven't seen a shred of wastematter on the bottom of the tank, cause my filter picks it up so easily. The water perimeters stay cleaner for longer, and I don't need to vacuum the sand nearly as much. I highly doubt that was a coincidence.

Messier fishes = messier water = more maintenance.

 

[fishguy2727]

onidrase: Have you every kept goldfish in tropical temps?

They are not producing significantly more waste when the temp is not significantly different. It is not as if you raise the temp two degrees and all of a sudden then need to eat twice as much and produce double the waste. It is an insignificant, immeasurable difference.

 

[ShaedM]

even tho most household room temps vary from 19-25? Goldfish are scavengers so they will always find left over food thats bound to be in the tank. Cold water or not i've found water changes in a cold tank should be done more regulary than warmer tanks anyway. Like i said so far no problems and it's all looking good.

Well, yes, even though household room temps very from 19-25. They'll eat and poo more when the room is warmer than it will when it's colder. It's a fact, not a debatable discussion, that their metabolism rises as the temperature does. And with that, more attention needs to be paid with the tank. Sure, they'll scavenge, but the scavenging isn't the main food source, and feeding enough to have food laying around on the ground for them to eat later isn't a very good idea either.

For example, when I had an bristlenose pleco in my tank, it was a poo machine, I had to constantly vacuum the sand to keep it looking like sand, and to keep the water clean and the fish happy. However, when the pleco was rehomed, I haven't seen a shred of wastematter on the bottom of the tank, cause my filter picks it up so easily. The water perimeters stay cleaner for longer, and I don't need to vacuum the sand nearly as much. I highly doubt that was a coincidence.

Messier fishes = messier water = more maintenance.

i don't think the level of 'poo' will increase much from when the temp is 19 to when it is say 25. I don't starve them if that's the impression you're getting. Please don't think because you're running a tank at 17-20 degrees that you don't have to do as many water changes. I have two filters running in my tank and there isn't a great influx of extra waste in the tank.