How fast do fish lose body temp?

[FX CharityCorals]

Ok does anyone know how fast or slow it changes? Say you do a water change and it goes from 78 to 76 does it take a alf hour for the fish to drop to tat level or is it pretty instant ?

 

[NanaReefer]

Why would your temp be dropping in the first place? Just cirious :) 2 degrees isn't to big a deal really & wont hurt the fish.

 

[Bow]

Well water conducts heat about 25 x faster then air. So probably pretty quick. But as long as it's still in a safe zone should be ok

 

[Mike J.]

Since fish are cold blooded there is no difference between water temp and the fishes body temp. So the answer would be instantly.

 

[droblack]

It would depend on the size of the fish and the amount of temperature change to determine the amount of time needed for the entire fish to change temperature. A few minutes would probably do it for most fish in home aquaria. Fish swim through thermoclines all the time in nature.