Will fish grow at same rate in a small or bigger tank?

  • We are currently upgrading MFK. thanks! -neo
Natalie;4940003; said:
If you add any more fish you really risk overstocking that 125g. In fact, it probably won't accomodate a full-grown RD, Texas, JD, and GT anyway. I think you're unfortunately going to end up with one or two really aggressive individuals who hurt or kill the others.

I plan on putting the ones who turn out to be too aggressive (if they do) in the 125g. I will have 2 tanks running.
 
photo.php
 
Natalie;4940003; said:
If you add any more fish you really risk overstocking that 125g. In fact, it probably won't accomodate a full-grown RD, Texas, JD, and GT anyway. I think you're unfortunately going to end up with one or two really aggressive individuals who hurt or kill the others.

x2
 
I think if you upgraded really soon, you would have a chance of them coexisting in the 125. Also, I think some bigger water changes would help with the growth rate. I feel like the effort that goes into the water change is taking the time and doing it more so than the actual amount of water.
 
Red devil 1985;4940016; said:
I scoop the poop then siphon once a week. These guys are messy eaters. I also change about 10 gallons or so of water each week.

Sounds a bit too overcrowded to me, but if they are super small it will work for a little while. My experience having about 10 or so fry in a 265 and 10 or more in a 75 proved to me that they grow way faster in the larger tank than the smaller. Mine in the big tank were double the size of those in the 75 even after 2 months. Both tanks had same routine done on them, fed the same food etc.

If it were me, id do 50% water changes once a week. 10% doesnt really do much to lower nitrates/ ammonia. Ive done 50% changes on all my tanks for years with no negative results.
 
I really don't think it's gonna work out in either tank, at least not for life. I'm assuming all the fish are juvies and pretty small right now which is why they're able to coexist but when full grown, they're going to be too big and aggressive for even a 125.

To answer your original question though, fish will generally grow faster in larger tanks strictly because it takes longer for the nitrates to build up in larger quantities of water. Good luck, and I hope you find some way to keep em all.
 
I agree and disagree with the tank size affecting growth. I've had great growth experiences in both large and small. I believe it has more to do with the particular fish and it's genetics as to which scenario is better plus the fish ratio to tank size. For example if you had just the rd in 55 you can grow him just as fast if not faster than in a larger tank up to 6" then you would need to upgrade. Also it's easier to do big water changes and more frequently in a smaller tank than s larger one. But you would have to double your water changes in smaller tank to equal the water amount to the larger tank. I personally like 125's or larger for growout tanks anyway due to the amount of fish I grow out.
With your current stock list they would have a better chance in the larger tank. But unless your able to do larger water changes it won't matter what tank they're in, you'll end up with One fish and it won't be too healthy. With power feeding comes water changes. If you insist on the feedings like that then I would recommend goin at least one day a week where u don't feed to let them digest the food, also ensure your adding veggie diet with peas to help keep the regulated.
Once u get the 125 you can upgrade 55 to a 75, I can see all the others co existing in 125 but the devil will most likely be moved and a 55 is too small for the long run. Just my opinions and experiences:)
 
If you want one to grow faster then work it to where that particular fish gets the pellets more, you'll have to feed a pellet at a time this way. Also if you can power feed high fat food like Omega Red krills. Don't forget to mix in pellets too.
 
Bottom line is the more you can get your fish to eat the faster the fish will grow. Big meals with water changes means fast growth.

Thats why oscars grow so fast. They eat more than any other types cichlids I ever had.

Tank size means nothing with growth rate.
 
MonsterFishKeepers.com