so far so good. it's not definate yet though, but it very well may be. maroons can be twisted and snap overnight. i bought 2, 1 alittle smaller than other. they both began hosting my RBTA, swimming together, etc, etc. then 1 day bigger 1 kicked other 1 out of RBTA, and began harassing it. finally smaller 1 had to stay on opposite side of tank and eventually after only about 3 weeks started having nipped fins, looked stressed and just went MIA. all u can do is keep your fingers crossed.