new trigger tank problems

Turning off lights is not a bad idea. When in doubt, I always do partial water changes. Can't hurt, might help...
 
ok, I darkened and covered the tank with a sheet for 24 hours, put two more pumps into the tank and put in the post-impellor venturi thing that attaches to one of my linear powerheads.

The pinktail trigger continues to progress, and is now more curious about the area around its hiding space, now more bold about feeding and rarely hides when I approach.

The niger trigger was, before the tank was darkened, stuck head-down tail-up at the back of the tank, dude looked very dead other than growling and flapping whenever something got too close. He has now made himself a home near where the pinktail hides out and is now at least upright and seems a lot calmer. Still has not taken food. It's only now that I can see him close up (his spot is near the front glass) that I can see the kind of damage he did himself - his top trigger is glassy see-through white and the edges of his worn fins now have a reddish tint towards the end. I believe he is doing better than he was all in all and for the moment I think it is better to see if he recovers some more on his own rather than go chasing and stressing him out again.

Tomorrow I am going to try and feed him some live brine and see how hungry he is. He has not gone for any of the small inverts in the tank that I can see, I saw a small crab crawl right in front of him this morning.

Thanks for the warm welcome and all of the help so far to everyone who replied.
 
I think the Niger trigger has a ICH. Just my thoughts you cant' see the ich that is the reason why he is doing so much damage to himself.

This happen to my little clown trigger also, if he starts to get a cloudy eye for sure he has ich.
 
Definitely not water. The pinktail triggers are much more sensitive than the nigers IME. I often see niger triggers come to the lfs i work at exhibiting the same symptoms that you are describing. I think it has a lot to do with their treatment after they were caught or the method that they were caught by. The best thing that you can do is leave him alone. Reduce the ammount of light in the tank but dont leave the lights off because it may disorient the pinktail and throw the tank off as well. If you can just take a couple bulbs out. Hopefully he will come around for you. Good luck.
 
The niger seems to be continuing to recover. Got him to feed this morning, first started picking at some of the debris from the pinktails food and then took a large piece of shrimp tail on the end of a stick.

The pinktail started showing the first aggression I have seen between the two, trying to chase the niger away from his stack of rocks (they were both in this part of the tank this morning and are back in it now after feeding), trigger up and a few tail swipes and charges towards him, plenty of grunting. The niger for his part seemed that he could not have cared less about this treatment, swimming around the tank a couple of times before returning to hide in the stack the pinktail was trying to oust him from. The nigers trigger is fine but the first few spans of his dorsal fin from the trigger are nearly non existant, seems to have simply worn it off rather than being bitten though. No visible signs of ich anywhere on either trigger, I know sometimes that this doesn't show, but, nothing has suggested it to me either by behavior or appearance.

I think the niger seems to be recovering nicely, more active, not panting, feeding properly, there seems to be a fresh membrane growing at the tips of his anal and dorsal and tail fins and there is less raggedness towards the ends. There is another set of hiding spaces on the right hand side of the tank if either is evicted from the left.

johnnybravo - I think you are right and I think the basic cause of this is me stressing them both out moving the rocks around shortly after they were put in. I should have simply left them on their own for a while longer (2-3 days rather than a half a day before moving stuff/shoving food in their faces) and given them time to adjust.
 
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