Adding fish to a 180

SyracuseMatt

Community Member
View Badges
Joined
Oct 9, 2019
Messages
74
Reaction score
72
Rating - 0%
0   0   0
Hi all,

I have a 180 that's been up and running for several years. Maybe two years or so ago, Brook wiped out most of my fish. I've been adding back somewhat cautiously but am now finding that it is difficult to predict which additions might be met with serious aggression. Here is what I have currently: 1) purple tang (most dominant); 2) yellow flanked fairy wrasse- reasonably aggressive for a 'peaceful' fish; 3) a pair of Clarkiis (actually added one recently because one of my existing pair, that never really paired up, had died and that actually went pretty smoothly; 4) foxface (seems to mind his own business unless the purple tan
g tries to pick on it); 5) coral beauty dwarf angel; 6) orchard dottyback (never really see it bother anything); 7) yellow clown goby (ignored by other fish); 8) mandarin (ignored by other fish); and 9) a geometric pygmy hawkfish that I only see every month or two.....Seems to show his face when I start to think he might be dead. If it matters, I also have a very large bullseye pistol shrimp that gives me some pause for things like gobies. I'm hoping to add a 'group' of fish of the same species. My LFS guy suggested a group of dartfish thinking that they will act like freshwater 'dither' fish. I've also thought about a group of anthias (lyretail?), maybe one male and a handful of females, thinking the anthias might be better at holding their own if someone tries to pick on them. Thoughts/advice would be appreciated. I hate to add a new fish only to see other fish ruthlessly pester it and because of my rockwork/coral, it can be very difficult to remove fish that decide to try to hide in the rockwork. I'm also thinking about adding a second dwarf angel. Again, any thoughts/suggestions are welcome. New fish will be quarantined in a 29 gallon tank if that matters. Thanks.



Matt
 
I had 4 dart fish in a 300 gallon. It resulted in two pairs. One pair eventually harassed the other pair into oblivion. I got the same result with Bengai cardinals. Chromis are often candidates for dither fish but they often murder the low ranking fish and keep doing it until then there was one. I have heard of success with having multiples of a single species in a tank coexisting but I have not gotten it to work.

I have had better luck with having a mix of closely related species like a mix of fairy and flasher wrasses. A mix of chromis has worked also. I have not tried a mix of relatively mild tempered damsels but I have considered it.
 
What has worked for me in the past is after QT getting clear polycarbonate rectangular pieces from Lowe's and dividing my tank. I divide the tank into a 2/3 section and 1/3 section. New fish go in the 1/3 section and existing fish are in the 2/3 section. I leave it like this for a few weeks. This allows the fish to see each other and vent most of the aggression, as well as allows new fish to find a safe sleeping area. Have pictures of this somewhere on this forum but can't seem to find them.

This has worked with clown trigger, purple tang, powder blue tang, harlequin tusk, and clown tang.
 
I had 4 dart fish in a 300 gallon. It resulted in two pairs. One pair eventually harassed the other pair into oblivion. I got the same result with Bengai cardinals. Chromis are often candidates for dither fish but they often murder the low ranking fish and keep doing it until then there was one. I have heard of success with having multiples of a single species in a tank coexisting but I have not gotten it to work.

I have had better luck with having a mix of closely related species like a mix of fairy and flasher wrasses. A mix of chromis has worked also. I have not tried a mix of relatively mild tempered damsels but I have considered it.
Sort of consistent with my limited experience. I had a group of Barlett’s anthias that did well for quite a while but the least dominant fish always looked kind of sickly.
 
What has worked for me in the past is after QT getting clear polycarbonate rectangular pieces from Lowe's and dividing my tank. I divide the tank into a 2/3 section and 1/3 section. New fish go in the 1/3 section and existing fish are in the 2/3 section. I leave it like this for a few weeks. This allows the fish to see each other and vent most of the aggression, as well as allows new fish to find a safe sleeping area. Have pictures of this somewhere on this forum but can't seem to find them.

This has worked with clown trigger, purple tang, powder blue tang, harlequin tusk, and clown tang.
Unfortunately, my rockwork (and coral) won‘t allow for that kind of separation. I did use an acclimation box for my recent Clarkii addition. It seemed to let the two clowns to work out dominance issues without the female hurting the male.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

New Posts

Back
Top