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I don't suppose a 10 gallons tank would accommodate even a single piranha.:dunno:
You'll need 150 gallons to fit 6 piranhas. They do best in shoals rather than being alone. Let alone their being big poopers which will need a very powerful filtration system.

And the theory of them eating a cow may be true but that applies only if the cow has wounds which will most likely trigger them to attack. Piranhas don't attack until their prey has blood to attract to.
Another thing, their reputation of attacking humans is far from true. They are actually shy and will attack only if provoked.

Many countries ban such fish and you are living in a country banning piranhas, there's no way for you to obtain them. And neither will it be if your tank is not large enough for accommodations.
 

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pygomania said:
but you can get away with 15-20.
I don't simply encourage people to keep piranhas in a tank that small. Piranhas can reach 12 inches which is far too large for a 15 gallons tank. It seems you applied that rule only to keeping a piranha in a small tank rather than in a group in a big tank.

I'll cite discus as an example. If you want to keep discus, 10 gallons per fish is the rule but that will not mean you can get away with one discus n a 10 gallons tank. 10 gallons is still far too small and some fish like socializing, not to be isolated. So for 6 discus, 55 gallons is the minimum recommended.

I'm not trying to discredit you for this but piranhas eat a lot and filtration has to be sufficient. A small tank would require almost overfiltration which is not often advisable and several water changes.
40 gallons is the minimum for a single piranha but I'd prefer keeping them in a larger tank instead of cramping them in a small tank.
 

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joeshmoe said:
Blue said:
A small tank would require almost overfiltration which is not often advisable .
y ? i have 75 gallon filter ging in my 55
Joe, in such a small tank, if you are the fish, would you want to be carried away by currents while you are alive? Of course, you'd reply no.:dunno:
 

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joeshmoe said:
sry i didnt see you said a "small" tank
That's ok, Joe. No need to apologize.:D
 

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KishFeeper said:
O ya i forgot, Yes you can buy Large piranha's but i dont no if they have a "Big Als" were you live :p
Not unless you have a tank of more than 200 gallons.:shake: Piranhas are large waste producers. Let alone what they eat.
 
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