Piranhas

Don't underestimate piranhas either - some are VERY aggressive!!!
I assume that ScottomacD has only ever seen pygo species and has not got too much experiance with piranhas - just a guess though :rolleyes:

piranhas come in 2 main groups Pygocentrus and Serrasalmus.

Pygos are generally less aggressive and shoaling fish

Serras are not social, they are very terratorial and usually the home aquarium is far too small for these fish to live together.

some of these species will attack you or anything placed in their tank - even nets and plastic divers!!!!

These kind of piranhas include S.Elongatus, S.Rhombeus and S.Iritans
and some piranhas are still known for their fin nipping like S.Spilopleura but eventially these fish will kill the fish and not just fin nip

here is a handy link to the PFury factsheets
 
I think that you have to respect all fish when you put that hand in the tank...at least, if you're hoping to get it back out! :)
 
not for Natts - but I would keep an eye on them, and be ready to move if they are coming right for you - a net ia sometimes also usefull to keep them away, but a divider is loads of hasstle and I would be reluctant to use one unless I had huge, hungry piranhas in an overcrowded tank.

Natts are great fish, and he may think about getting a yellow natt "ternetzi" ir a piraya or a caribe to add to his shoal - as you can mix these species with good sucsess although many like to keep to one species.
 
Im not underestimating them. I actually like pirahna's and didn't really know it until the other day when the lady friend said something about keeping pirahna's in our place together once we get it and the reaction I had told me deep down I liked em but never thought I'd be able to have them lol. When she said something about "it being cool to have a big tank with man eating fish" (talking about pirahna's) I felt a big warm fuzzy feeling inside. I still don't see them being aggressive though as I would a jag or any large C/A cichlid for that matter. I just can't see a pirahna BY ITSELF running up and down the tank trying to attack me. No matter the specie's. I would put any species of pirahna in by itself with a jag or dovii and my money is on the cichlid's (unless they are mutated hybrids such as those in the movei :P). Anyway if I ever end up getting pirahna's someday I'll look you up for advice Innes. Just don't know how far along that'd be.
 
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*Cough, Cough*Whipped*Cough*

(You can feed them many other things...mammals don't have to be on the menu.)
 
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