Looking for a fish which fit these criterias

[Shimizu Megumi]

What country is this? Also make sure your food, filtration and waterchanging is good, aim for 10x turnover and 50% weekly waterchange if possible to avoid Hole In The Head (HITH) which can be an issue. Also avoid live feeders they are super bad in most cases

Hungary.
I know about live feeders are bad mostly because no real nutrition value and the possibility to transmit disase to the fish, so they are big no-no.
However I dont know what you mean by 10X turnover,that strong of filtration maybe? And arent 50% water change too much, most of case I read that 25% enough?

About food dont know much yet outside of live feeders bad. So on right food I really love to see some link or explanation, also little hope that maintaning food wont be expensive.

Thanks again!

 

[nzafi]

You can probably also do a black/rhombeus. While they grow to 50cm in the wild you need to import them at that size. I don't know anyone that has grown a small one beyond 30cm. I had one for 17 years and it stopped at 25cm.

 

[Deadliestviper7]

R u aposed to a school of red bellies and some Raphael catfish?

 

[Hendre]

Hungary.
I know about live feeders are bad mostly because no real nutrition value and the possibility to transmit disase to the fish, so they are big no-no.
However I dont know what you mean by 10X turnover,that strong of filtration maybe? And arent 50% water change too much, most of case I read that 25% enough?

About food dont know much yet outside of live feeders bad. So on right food I really love to see some link or explanation, also little hope that maintaning food wont be expensive.

Thanks again!

There is a sticky thread on feeders in the general aquaria siscussion subforum.

If you have a 125 tank, you want a filter that can put 1250gallons per hour out, large carnivores need heavy filters.

The more waterchanging you do the better it will live, there is not set amount byt 50percent is really good most of the time

 

[greenerinks]

Piranhas are very hardy fish from my experience keeping them. 10x turnover is encouraged for all monster fish keeping and I support over filtration but for honestly speaking for a solo piranha in a 125.. You don't need 10x.. 6-8 is plenty. Also, 50% water change is fine for piranhas because they can tolerate water chemistry changes better than some other fish for example stingrays or plecos. I usually do 30-40% every 3rd day and run over 10x turnover but none of my tanks have just one fish lol. You'll be fine for most serralsalmus species with a 125. Black rhoms grow extremely slow.. I have one that I grew out from 1.5cm tiny tiny baby. It's been 2 years and here she is: about 6" and very shy and timid still. I keep her with a school of exodons in a planted 55g.

 

[Hendre]

Piranhas are very hardy fish from my experience keeping them. 10x turnover is encouraged for all monster fish keeping and I support over filtration but for honestly speaking for a solo piranha in a 125.. You don't need 10x.. 6-8 is plenty. Also, 50% water change is fine for piranhas because they can tolerate water chemistry changes better than some other fish for example stingrays or plecos. I usually do 30-40% every 3rd day and run over 10x turnover but none of my tanks have just one fish lol. You'll be fine for most serralsalmus species with a 125. Black rhoms grow extremely slow.. I have one that I grew out from 1.5cm tiny tiny baby. It's been 2 years and here she is: about 6" and very shy and timid still. I keep her with a school of exodons in a planted 55g.

View attachment 1205337

Exodons probably make it grow slow and make it timid since exodons are such aggressive feeders and are generally belligerent?

Great info though!

 

[greenerinks]

Mmmm I'm not sure.. Don't have another solo black rhom grown from start to see the difference in growth but I can see the exodons disperse when she starts roaming around but she always chills underneath plants or next to driftwood. As with any fish, it really depends on each individual personality. Mine just happens to be shy and timid. the exodons put on a much more entertaining show during feeding lol.

 

[Shimizu Megumi]

You can probably also do a black/rhombeus. While they grow to 50cm in the wild you need to import them at that size. I don't know anyone that has grown a small one beyond 30cm. I had one for 17 years and it stopped at 25cm.

Worried about two things:
I really fear that bigger fish can crack aquarium, and typically above 15-20cm many fish said to be capable to do so, wouldnt be pretty if that happened,so really want to avoid this.
Also fear that fish of that sizes wouldn be uncomfortable in 125 gal, and that would be just too sad, I really would want to provide the best I can.

R u aposed to a school of red bellies and some Raphael catfish?

Red bellies said to be growing to 35 cm without expection and many people said not really suitable for private aquariums at that size. For more red bellies(which needed since red bellies said to be really suffer alone) 125 gall simply doesnt cut it, which is the biggest I want to go.

Also aquarium harder to maintain with more fish and I could do mistake easier, also I never really liked the idea of community tanks. Plus dont really want different fish if I dont find attractive enough.(raphael catfish)

There is a sticky thread on feeders in the general aquaria siscussion subforum.

If you have a 125 tank, you want a filter that can put 1250gallons per hour out, large carnivores need heavy filters.

The more waterchanging you do the better it will live, there is not set amount byt 50percent is really good most of the time

And I thought double is enough

Piranhas are very hardy fish from my experience keeping them. 10x turnover is encouraged for all monster fish keeping and I support over filtration but for honestly speaking for a solo piranha in a 125.. You don't need 10x.. 6-8 is plenty. Also, 50% water change is fine for piranhas because they can tolerate water chemistry changes better than some other fish for example stingrays or plecos. I usually do 30-40% every 3rd day and run over 10x turnover but none of my tanks have just one fish lol. You'll be fine for most serralsalmus species with a 125. Black rhoms grow extremely slow.. I have one that I grew out from 1.5cm tiny tiny baby. It's been 2 years and here she is: about 6" and very shy and timid still. I keep her with a school of exodons in a planted 55g.

Thanks for sharing your xp will be sure to use and really glad to hear that piranhas hardy fish! Very nice picture!
What are you feeding them?

 

[predatorkeeper87]

Worried about two things:
I really fear that bigger fish can crack aquarium, and typically above 15-20cm many fish said to be capable to do so, wouldnt be pretty if that happened,so really want to avoid this.
Also fear that fish of that sizes wouldn be uncomfortable in 125 gal, and that would be just too sad, I really would want to provide the best I can.



Red bellies said to be growing to 35 cm without expection and many people said not really suitable for private aquariums at that size. For more red bellies(which needed since red bellies said to be really suffer alone) 125 gall simply doesnt cut it, which is the biggest I want to go.

Also aquarium harder to maintain with more fish and I could do mistake easier, also I never really liked the idea of community tanks. Plus dont really want different fish if I dont find attractive enough.(raphael catfish)



And I thought double is enough



Thanks for sharing your xp will be sure to use and really glad to hear that piranhas hardy fish! Very nice picture!
What are you feeding them?

I have an elongatus in a 125, he's about 7 inches long, and definitely not capable of breaking the glass....

sanchezi or elongs are your best bet. they tend to be outgoing fish. Mine swims in the front of the tank when I walk in, zero issues with my hands in the tank, shows very little fear.

you aren;t going to have a comm. tank with any piranha long term. Red bellies are very skittish, but won't comm. with other fish. They will kill tank mates, and then 1 or 2 of eachother until balance is achieved.

 

[Shimizu Megumi]

I have an elongatus in a 125, he's about 7 inches long, and definitely not capable of breaking the glass....

sanchezi or elongs are your best bet. they tend to be outgoing fish. Mine swims in the front of the tank when I walk in, zero issues with my hands in the tank, shows very little fear.

you aren;t going to have a comm. tank with any piranha long term. Red bellies are very skittish, but won't comm. with other fish. They will kill tank mates, and then 1 or 2 of eachother until balance is achieved.

Yes I know about red bellies not good option for me, just answered someone who asked why not go with red bellies. I really dont want one just too big with 35 cm.

As said for me the 3 criteria the most important one which listed at the first post.