Warmer water makes rays more agressive?

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Bogwoodbruce

Bogwoodbruce

Peacock Bass
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Feb 2, 2007
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Ive been keeping 5 rays in a 6x2x2 2 males 3 females ofr a few months fine, i keep the temp around 25c and on monday we had a heat wave and all my tanks went up 5c to 30c and i noticed that in those 2 days i have had 3 rays with bites and they seems more agressive than usual, now itc cooled to around 27c things are much quiter, i wonder if the empreture difference is responsable the same thing happens with malawi cichlids amassive increase in temp in a short period of time makes rays more agressive, just a thougt i need opinions.
 
interesting.....I'd like to hear some opinions on this too
 
i'm not too sure about rays.....my flowerhorns are definately more agressive in warmer water, as for my rays, they seem to be the most active at 78F anything lower or higher they calm down
 
IMO your rays are way to young to be biting each other and/or showing that type of aggression.. That is something adult rays do, and it's breeding behavior.. You're rays are still just babies.


I think it was the temperature increase made your Fei Feng's metabolism race, and he decided to start 'grazing' on your Rays. Fei Fengs make horrible ray tankmates, as do most cyprinidae (edit: algae grazing CHARACINS), as they are algae grazers and will relentlessly peck a rays disc if it's hungry.
 
Miles, fei fengs are characins. ;)

The increased temp could have caused them to be a little more active or boisterous then usual. They are cold blooded aferall.
 
oops my bad. Characin it is.. they just remind me so much of a bala shark.. could of sworn they were a stupid cyprinid..

either way, they graze on rays and increased metabolism = increased appetiate = increased grazing
 
Yeah, I would agree with Miles on this. I would say that it's pretty much universal. If you raise the temperature of a cold blooded organism's habitat, subsequently increasing their rate of metabolism, their behavior (or behaviour, as you would spell it on your side of the big pond) is bound to change, and activity is bound to increase to a certain limit. Of course, if the temperature increases beyond the organism's limits, it's just going to cook.
 
well i keep a fei feng in my tank and the temp is at 86/30 ALL year round never had any problems

as for fans their is no need for them until your tanks get to 90-91 just make sure you have plenty of airation

my rays have always shown more signs of breeding when i do a water change and the temp drops to 78

i feel that 25 is to cold for rays anyway if you keep the temp at 30 the rays feed better are more active and you stand less chance of parasites
 
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