Thanks for your comments Sandy.

Jonathan

"Sandy Birrell" wrote in message
...
Cookie wrote:
"Jonathan Wood" wrote in message
link.net...
Does anyone have experience keeping an Oscar without a heater?

I have some local fish in two tanks (50g and 125g) and the water is
room temperature (around 64). I was wondering if an Oscar could
live
in such a tank.

Jonathan


No they cannot. Oscars are TROPICAL fish NOT coldwater fish. That
would be like putting you in the Artic without a coat. Break down
with
yourself and buy a heater! The water should be anywhere from 75 F to
82 F.
-Cookie

Not according to this report from the Florida Museum of Natural
History.

"Dispersal northward in Florida appears to be restricted by
temperature. A 1982 Florida Game and Freshwater Fish Commission study
determined the lower lethal temperature for this species is 12.9° C.
In its native range, the oscar is valued by artisanal fishers as a
food fish."

Thats approx. 55ºF.

http://www.flmnh.ufl.edu/fish/Galler...car/oscar.html

I don't have heaters on in my tanks at night, although they are on all
the time the lights are on, containing angels, red eye tetras, rummy
nose tetras, plecs., and harlyquins, they all do fine and even the
plants, all crypts., grow like mad. The temp in the tanks can drop to
68ºF, the lowest I have recorded is 64ºF but that was a very cold
night and I hadn't left the central heating on to compensate, the
heaters when the lights are on maintain the tanks at 78-80ºF. When
doing water changes I remove 20% approx. and replace it using the
garden hose direct to the cold water tap adding de-chlorinator. I live
in Scotland so it isn't as if the temperatures are tropical

It works for me, and has done for years, but I wouldn't recomend a
newcomer to do it, you have to watch the temp in the tanks doesn't
drop too low too quickly, especially in winter, I sometimes have to
stop and wait a while before filling all the way.


--
Don`t Worry, Be Happy

Sandy
--

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