my not fancy, popular in a way goldfishy types

Question
i i have 3 black moor/moore in i'd say 7-9 gallon tank with a airator and um that filter thingy.i feed it flakes wardley total flakes.when one gets too close to another it chases the other as if defending it's territory.??????HELP?WEIRDNESS?
last time i had 10 goldfish's 1cm and one beat the hell out of all the others.leaving them dead and blood

Answer
Hi Sam
It probably is defending it's territory.  For goldfish, it's recommended to have at least 10-15 gallons for one.  So 3 of them in a 9 gallon tank, they're probably feeling pretty cramped, which could lead them to aggressive behavior like you're seeing.  The best way to overcome that is to get at least a 30-40 gallon tank minimum.  Or, get rid of 2 of them.  With that many goldfish in a small tank, it'll be nearly impossible to keep the water quality good as well.  

Hope that helps!

Christy