75 gallon Coldwater tank stocking suggestions

Dillan Murphy

I'm planning a 75 gallon coldwater tank. I will be having telescope goldfish and hillstream loaches in this tank. How many of each fish can I have, also do I even need a heater? My other tank ranges from 68 in the winter and 73 in the summer without a heater.
 

mimo91088

Could probably swing 5 or 6 of them. Maybe even up to 7 depending how much work you wanna do. Just keep in mind goldies are dirty fish. The high end of stocking means changing a lot of water. A good basic rule of thumb for fancies is 20-30 gallons for the first, and add 10 gallon for each additional.
 
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Dillan Murphy

Could probably swing 5 or 6 of them. Maybe even up to 7 depending how much work you wanna do. Just keep in mind goldies are dirty fish. The high end of stocking means changing a lot of water. A good basic rule of thumb for fancies is 20-30 gallons for the first, and add 10 gallon for each additional.
I'll probably do 6 of them. I'm planning on getting a fx4 filter will that be too much for the goldfish?
 
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TheeLadyG

I have a 75G with three fancy goldfish in it. It is very beautiful and gives them a lot of swimming space. One of my telescope eye fish has grown to be over 7" in length with her full tail.

If you want to make a better environment for your fish, I would not go with more than four, honestly. It makes caring for the tank 100x easier, they are able to swim freely with each other, and you can pay closer attention to individuals and their wellbeing. I added my fish individually as well. I may get a 4th fish sometime in the coming years but that remains to be seen. The three fish in the tank are stunning and are easily seen from the street through my window.
 
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Noroomforshoe

you can probably do 4-5 telescope eye goldfish. I really do not know if hill streams are compatible with goldfish. You would ideally keep a school of no less than 6 loaches. But I definitely don't know if they are a good match with goldfish. The temperature is fine for both species and you should not need a heat if you are sure the temp doesn't go below 68.
 
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Wouldratherwatchaquarium

Hillstream loaches prefer clean, well oxygenated and fast flowing water. I can't see the telescopes coping with a strong current in the aquarium very well. It may be possible to keep them together, but probably not optimal for either species.
 
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