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Marshalls bartletts are always much much smaller. I got in about 50 of them all were 1" or less and female (no males)
the christmas island bartletts are always big and usually male. out of 100 i think i had 22 females, rest males. about 30 were "supermales" with the streamers. So either a) they only collected the big bright ones, or b) the bartletts are just like that in nature....
i know when i keep them together in confined spaces (aka 100 in a 55 gallon) they do bicker and will bite the tips of the tails of other ones (usually male on male aggression).
I think it has to do with space verse quantity. in a 180 gallon tank (just for arguments sake) i would add probably 7-10. IME they are very passive towards other fish (most noteably fairies/tangs/angels etc)
This is interesting. Especially those who have had them pick each other off... not characteristic of bartletts IME... keep em coming. im intrigued!
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