Fishanatic
Aquarium Advice Addict
Black moor/Fan tail.
Witch is the hardiest, and the best choice.
Also, could it survive at -15C(5F)
Witch is the hardiest, and the best choice.
Also, could it survive at -15C(5F)
If he was exposed to a temperature of 5F Very shortly. Not submerged in it.I am not sure what your asking here. A regular fantail will likely be a bit hardier than a moor. Moors eyes are easily subject to injury and are burned by toxins. Nitrates need to stay low to prevent damage. That said, don't assume any fancy goldfish is 'hardy'. They actually require bit more diligence and care that quite a few tropicals.
In respect to the temp query, I don't understand why you would expose a fish to 5f, even short term unless you were just running from lfs to a vehicle. Would the fish survive the run to your car? Yes. Would it survive being submerged in supercooled water of 5f? Likely not but water freezes at 32f- anything lower would require the addition of chemicals (ie, vodka, antifreeze efc) which would kill a fish anyway. A bit more clarification of what you are asking would help.
If he was exposed to a temperature of 5F Very shortly. Not submerged in it.