Yeah, some of the above suggestions may work to bring about a modicum of peace, but to keep it simple you may want to return the dottyback to LFS, join the Six Line Wrasse Haters' club which has many R2R members and chalk it up to experience.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
I made the mistake of having both a sixline and neon dottyback in a 40g QT. I literally saw the dottyback attack the sixline so bad he broke its jaw and the sixline eventually did not make it. I even got them from a tank break down, where they were coexisting for almost a year in a 25g cube so I didnt think I had much to worry about. I would really avoid adding neon dottyback unless its a very large tank. Very beautiful but very aggressive when they fell like it. Maybe an orchard dottyback would be betterIn a tank that size aggression will be diffused, but unfortunately sixlines and dottybacks are not a good mix.
Well I don’t want to be Unresponsible and cause an unnecessary death so he’s going backI made the mistake of having both a sixline and neon dottyback in a 40g QT. I literally saw the dottyback attack the sixline so bad he broke its jaw and the sixline eventually did not make it. I even got them from a tank break down, where they were coexisting for almost a year in a 25g cube so I didnt think I had much to worry about. I would really avoid adding neon dottyback unless its a very large tank. Very beautiful but very aggressive when they fell like it. Maybe an orchard dottyback would be better
To add to this, it may work out for a week or a few months maybe a year or two — eventually it is very likely to end in the death of one or both of them and quickly. I feel this isn’t an ethical risk to take, personally.TBH I don't think that will help much because the sixline views the rockwork as his territory. But in the fish trap the dottyback won't challenge the siixline's territory, but once he is released he is going to want to claim some of the rockwork as well.
Unless the tank is huge dottybacks and sixlines are not good tankmates.
To add to this, it may work out for a week or a few months maybe a year or two — eventually it is very likely to end in the death of one or both of them and quickly. I feel this isn’t an ethical risk to take, personally.
It’s not if they have trouble, but when, IMO
Yeah, like with humans, there are exceptions to the rules.I purchased a neon dottyback and have a full blown reef system (around 175 g) with loads of Wrasse all sorts, which the LFS new and they said he would be ok so I purchased him and in he went.
Normally I always read up before I buy, just in case, but in this case I didn’t, well until I got home and sat down with a nice cold beer.
Then I read that these things are basically the spawn of Satan with more killing power per inch than virtually anything else in the sea (or words to that effect!). There is no way I could catch him with my rocks so I left him whilst holding my breath.
‘So far’ he has been a model citizen and wanders in the caves and rockwork and he certainly hasn’t attacked any other fish, that I’ve seen.
But I suppose there is always tomorrow........ !
I purchased a neon dottyback and have a full blown reef system (around 175 g) with loads of Wrasse all sorts, which the LFS new and they said he would be ok so I purchased him and in he went.
Normally I always read up before I buy, just in case, but in this case I didn’t, well until I got home and sat down with a nice cold beer.
Then I read that these things are basically the spawn of Satan with more killing power per inch than virtually anything else in the sea (or words to that effect!). There is no way I could catch him with my rocks so I left him whilst holding my breath.
‘So far’ he has been a model citizen and wanders in the caves and rockwork and he certainly hasn’t attacked any other fish, that I’ve seen.
But I suppose there is always tomorrow........ !
I will say I’ve been able to “break” many fish rules over the years, taking special interest in learning and observing fish behavior - particularly aggressive/territorial fish. I’ve taken some questionable gambles (I have a plan B - IE several tanks at a time)— I did a neon dottyback 7 years ago assuming it couldn’t be nearly as bad as it’s reputation. In a separate tank, I ignored the advice about how sixlines are also the spawn of Satan.
Well my neon was fine for 6 months before deciding my giant female pink skunk clown, Lubbock fairy wrasse, mccorskers flasher, damsel, and even a yellow tang were not allowed near his rock in the middle of the tank. He visibly damaged the skunk clown that I had for 6 years at that point. She ended up getting an infection and perishing. This was the biggest pink skunk I’ve seen and anyone that knows about these clowns —let me just say I called her “mob boss” — she attacked everything. She didn’t tolerate nets, magnets, hands, anything in her tank. She HURT when she attacked. They’re NASTY. The male stood clear and survived. I took the whole tank apart to remove him. I was so angry that he tore up my other fish’s fins in 48 hours that badly that I returned him to the LFS. She was my favorite fish!
My six line became more and more aggressive to his tank mates, too but was too small and I saw the writing on the wall and gave to a friend with a FOWLR. I didn’t let that one grenade out of control!
What fish do you have in your tank?Never had an issue with mine and it is striking in color.
Being the other mates were in the tank first, He should accept them as he is at disadvantage of hiding places and knowledge of aquascape

