that depends on where you live...and on your ambient room temp. they do not need chillers if your room temps don't get over 75-76F in the summer. if you live in the tropics then yea either get a chiller or go with tropical fish lol.
they do fine w/o chillers at temps lower than 75F but will need a heater if you drop below 55-60F (for fancies)
And just to avoid confusion 75F is quite hot for them but not life-threatening. just in the hottest summer days that temp will be ok. they generally like the cooler water though of 65-70F
As for the Goldfish + Swordtails I would say no for a few reasons.
1. I am currently keeping a goldfish in a swordtail tank (not by my own will)
2. Goldfish will be quite aggressive to your tropical swordtails.
3. The goldfish will get Ich for a while if they're kept at tropical temps of 76-80F which is best for swordtails. goldfish will get over the ich tho and will get used to it...
4. The goldfish's requirements are vastly different in terms of temperature...they just won't grow as large in hotter water.
5. they will have a shorter life span with swordtails because hotter water increases their metabolism and therefore they live their lives much faster than a goldfish in the ideal conditions
they do fine w/o chillers at temps lower than 75F but will need a heater if you drop below 55-60F (for fancies)
And just to avoid confusion 75F is quite hot for them but not life-threatening. just in the hottest summer days that temp will be ok. they generally like the cooler water though of 65-70F
As for the Goldfish + Swordtails I would say no for a few reasons.
1. I am currently keeping a goldfish in a swordtail tank (not by my own will)
2. Goldfish will be quite aggressive to your tropical swordtails.
3. The goldfish will get Ich for a while if they're kept at tropical temps of 76-80F which is best for swordtails. goldfish will get over the ich tho and will get used to it...
4. The goldfish's requirements are vastly different in terms of temperature...they just won't grow as large in hotter water.
5. they will have a shorter life span with swordtails because hotter water increases their metabolism and therefore they live their lives much faster than a goldfish in the ideal conditions
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