in a 300, you can do a school of i think 6 to 8, but it would take some time for them to grow out to be the size of your original one.
dude what are you talking about?? in a 300 gallon you can do way more than 8, each rbp need atleast 20 gallons per fish, rbp acctually grow pretty fast in the first year, anyways i think that for better info this should have been posten in the piranha sectionin a 300, you can do a school of i think 6 to 8, but it would take some time for them to grow out to be the size of your original one.
actually one needs a 100 ( 5 foot ) then 25 gallon per so 8 RBP ( and the OP didnt specify if its a pacu or piranha, just RBP.. could mean both. ) one piranha 100 gallons, then for every piranha is 25 gallons so for 8 thats 275 gallons for 8 piranhas.. so 300 for 8 should be big enough...dude what are you talking about?? in a 300 gallon you can do way more than 8, each rbp need atleast 20 gallons per fish, rbp acctually grow pretty fast in the first year, anyways i think that for better info this should have been posten in the piranha section