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Old 03-13-2009, 12:07 AM   #1
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Goby bit my Chromis??





I just noticed one of my 3 Chromis (middle sized) has a "mark" on him. The only hypothesis that I have is that my Diamond Goby took a chomp. The curve seems to fit the outline of his mouth and the little scrape mark looks like it could be the little "tooth" that I see in the middle of the inside of his mouth.

Does this seem likely or does it look like something else?

It was hard to get this pic, but I tried to edit it so that it emphasized the wound.

Thanks!!

Jeff

p.s. 42g tank and only fish are 3 chromis and 1 diamond goby
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Old 03-13-2009, 06:35 AM   #2
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It can happen. How big is the Goby.
PS: nice picture
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Old 03-13-2009, 09:42 AM   #3
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Gobies can be terriatorial . If provocated they will protect there area ...
Keep water pristine keep fish well fed and watch closely ..
Also make sure to keep the stress down as much as possible for him ..
It really is impossible to tell 100% but if I had to hazard a guess I would say he did bite him ..
Gobies are normally peaceful til provicated to protect there "home" HTH
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Old 03-13-2009, 10:19 AM   #4
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As Sadie said it is very possible. As she said also keep water in excellent condition and watch for a secondary bacterial infection.
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Old 03-13-2009, 05:32 PM   #5
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It's a newer tank and the everything is at 0 levels except nitrate is about 5ppm. I just noticed last night that the chromis pack seems fo be sleeping in a cave that is on the other side of the rock from the goby's den!!
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Old 03-15-2009, 08:59 PM   #6
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This could explain it perhaps move some rock around break up the territories a bit .. Then keep the lights out for a day ...to confuse them a bit ... GL and HTH
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Old 03-16-2009, 01:37 AM   #7
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Well...bad news. I came home from work yesterday to find the wounded chromis with a wound about 3 times the size...same mouth-shaped wound. He was breathing very fast and hiding behind a rock. About 30 minutes later he had died.

I hate that this happened and it upsets me to think that I could have possibly prevented it by moving the rocks a day earlier. I hope that someone out there takes a tip from this loss and saves a life!!

So my next question is will 2 Chromis be ok? I've heard that they don't do well in even numbers??

Thanks!!
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Old 03-16-2009, 08:53 AM   #8
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Hey now dont beat yourself up over this ... I could tell you stories that would make you cringe ... You are new and learning 99.999999% of us have made the same mistakes in one way or another . Here is one that I will share with you . I have long wanted a yellow watchman goby . It is rare to see them here in our area , so one day I saw one I had to have it ! I knew my system could support him just fine . So I bought him ! I brought him home acclimated him and placed him into the tank .. lights went out for the night , so the other fish could go to there "area" of the tank he could find his "area" . The next morning I woke he was fine (used a flash light to see him) "sigh a big relief " go get my coffee , come back to the LR the lights are on at 11 am in our system . By 1pm something wasnt right , so I start priming salt H20 prep for a change , get everything ready run some quick tests every thing is WNL and fine , but he is not I grab the hospital tank and some PVC pieces and move to set up . I drain out 3 gallons water by this point he is just not right at all ! I pick him up and gently move him to his new tank . By the next day his back was red! What had I done ?!?!
For 2 days he held on .He was doing better on day 2 then BAM he was dead . I was perplexed ! Then it hit me I put him in the tank till his death ! I roomed him with a purple pseudochromis (mean lil bugers), he had invaded the pseudochromis's territory , now understand this tank is full reef so moving stuff was not going to happen ! And since it is a nano , "properties" are prime . The psuedochromis , and yellow watchman goby are same shape , size ect that could cause sparing ! I had at this point been doing this for 6+ years or so so I should have known better ! Moral of it is ....It happens even to us who have been doing it a while , and become lax .
Now to answer your question they usually do better in 3 or more but they may do fine in just the group of 2 .. That is upto you if you wish to add another chromis at this point .. GL HTH
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Old 03-17-2009, 12:38 AM   #9
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Sadie, thanks for the advice/support!! I'll watch my 2 Chromis to see how they act together...so far so good. The gobie swims up to the top and around a bit but doesn't seem to even notice those 2 Chromis swimming around (close to him!)
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Old 03-17-2009, 01:45 AM   #10
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Hmmm, unless the chromis went into the goby's territory, I doubt that is the culprit (but don't dismiss that). Chromis are middle swimmers (and schooling fish), your goby is a sand dweller and probably would'nt attack him, unless provoked. I would watch the others and see what happens. I think it might be possible that he was wounded before you bought him and an infection set in, or he was weakened and succumbed to your clean up crew.
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