Red Bellied Piranhas

[angeli697]

about wut size in length will rbp's start getting their red color? right now my 1" - 1.5" rbp's have just the anal fin red. their body is still spotted.

 

[Straydum]

the color can vary depending on location and age. i would say around 4-5 inches. also, belly areas are blood red in healthy specimens.

 

[Erik.M.M.]

I have a 4 to 5 inch red belly and i wanted to buy 4 like it but there was no
more and they said they could not get more in that same size, so i decided
to get 4 2 1/2 inch red bellys. there in a 55 galon tank with a seperator, so
i was wondering would i be able to ever get them together at any point??

 

[Gatorbait]

It depends as far as when they get their red coloring started. Usually around 2 1/2". It helps if you feed raw shrimp etc.

I have a 4 to 5 inch red belly and i wanted to buy 4 like it but there was no
more and they said they could not get more in that same size, so i decided
to get 4 2 1/2 inch red bellys. there in a 55 galon tank with a seperator, so
i was wondering would i be able to ever get them together at any point??

You should be able to. Once they reach 6" or 7" most tend to slow down. The others will catch up in a couple months. It doesn't always work no matter how hard you try to make it, tho. It just depends on the particular fish, especially if one has been kept solo for too long.

My best advice would be to make sure when adding them, to make sure the smallest isn't more than an inch or inch and a half at most smaller than the largest in the tank. IMO, you should get a 125 tank for 5 piranhas tho. 75g tank is really pushing it for 4 and sometimes works for me and sometimes doesn't but with 5 I don't thikn they'll allow that many together.