Fish Disappearing in my Tank - Aquarium Forum
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post #1 of 11 (permalink) Old 02-24-2012, 01:53 PM Thread Starter
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Fish Disappearing in my Tank

I'm just trying to figure out what is going on. In the past month or so I have had a few fish disappear, and by disappear I don't necessarily mean they died, they just are gone. I have had a Purple Psuedochromis, a Blue Green Chromis and a Yellow Tail Damsel disappear with no carcass. Granted I have about 60 pounds of live rock in my 55 gallon so maybe they pass away and the body dissolves or is eaten away by other fish, but it's strange to have fish just disappear with out a body floating around. Is this most likely fish killing each other off? My water parameters are perfect, and I have a semi aggressive tank that currently includes: 1 Yellow Tang, 1 Flameback Angel, 1 Diamond Gody, 1 6 line Wrasse, 1 Blue Damsel, 1 Tomatoe Clown, 1 Kupang Damsel, 1 Yellow Damsel and 3 Blue Green Chromis. Aggression seems to be fine, I feed them often in small increments to keep aggression down.

Has anyone else had this problem?
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post #2 of 11 (permalink) Old 02-25-2012, 07:58 PM
 
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Re: Fish Disappearing in my Tank

Any coral or crabs/shrimp? They'll eat anything laying around.

180 Gallon Reef tank

60 Gallon frag tank
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post #3 of 11 (permalink) Old 02-25-2012, 08:51 PM
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Re: Fish Disappearing in my Tank

You have a CUC i would guess. And they will pretty much take care of a fishy that stops swimming. I once lost a Yellow Tang, never saw it again. But, your Damsels are going to keep it up, so just be prepared to lose more.

My 240g Reef Tank Pics
Water Parameter: Alk-8:PH-8.2:Cal420:Phosphate.05:Temp77:Nitrates-20:Mag1250:SG1.025
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post #4 of 11 (permalink) Old 02-26-2012, 12:20 AM
 
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Re: Fish Disappearing in my Tank

Make sure you have no Brittle Stars hidden in your rocks, they will drag away and eat dead fish. Large ones can actually catch and kill active fish. I have lost some crustaceans in my 20G tank the same way you decribe.
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post #5 of 11 (permalink) Old 02-26-2012, 02:28 AM Thread Starter
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Re: Fish Disappearing in my Tank

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Originally Posted by Reefing Madness View Post
You have a CUC i would guess. And they will pretty much take care of a fishy that stops swimming. I once lost a Yellow Tang, never saw it again. But, your Damsels are going to keep it up, so just be prepared to lose more.
Reefing,

CUC?

So are you saying that my Damsels are killing everything off? I know I have quite a few, and I have a 4 Stripe Damsel that is particularly aggressive.
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post #6 of 11 (permalink) Old 02-26-2012, 02:30 AM Thread Starter
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Re: Fish Disappearing in my Tank

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Any coral or crabs/shrimp? They'll eat anything laying around.
Noochy, I have a few hermit crabs, a cleaner shrimp, but just a couple small corals.
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post #7 of 11 (permalink) Old 02-26-2012, 02:32 AM Thread Starter
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Re: Fish Disappearing in my Tank

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Originally Posted by Reefing Madness View Post
You have a CUC i would guess. And they will pretty much take care of a fishy that stops swimming. I once lost a Yellow Tang, never saw it again. But, your Damsels are going to keep it up, so just be prepared to lose more.
Reefing,

CUC .... Clean up crew... i get it now. Yes I do.
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post #8 of 11 (permalink) Old 02-26-2012, 03:08 AM
 
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Re: Fish Disappearing in my Tank

i hate damsels just because of their non stop fighting. I had one damsel look like it was in a boxing match with a swollen eye and bruised lip. A dead fish in a tank with a CUC and hungry fish can disappear within a hour.
The funny thing is once a fish dies, it loses its electrical pulse(fish's lateral line detects this) which tells other sea creatures that it is dead. Once its skin is punctured and something is eating it, it will start a feeding frenzy. FISH LOVE CHUM!

36 Gallon Saltwater reef tank
Ocellaris Clown, Scooter Dragonet, sandsifter star, Decorator crab, emerald crab, coralline snails, blue leg hermit crab, and horseshoe crab.
Zooad's and shrooms
40 pounds of Live sand, 20 pounds of LR
Canister filter, 1-unit of chemipure
VHO 2-39W bulbs reef sun/actinic
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post #9 of 11 (permalink) Old 02-26-2012, 11:31 AM
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Re: Fish Disappearing in my Tank

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Originally Posted by Frank1971 View Post
Reefing,

CUC .... Clean up crew... i get it now. Yes I do.

One Damsel in a tank is pretty rough, and more than one is alittle more than dangerous.

My 240g Reef Tank Pics
Water Parameter: Alk-8:PH-8.2:Cal420:Phosphate.05:Temp77:Nitrates-20:Mag1250:SG1.025
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post #10 of 11 (permalink) Old 02-26-2012, 12:00 PM Thread Starter
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Re: Fish Disappearing in my Tank

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Originally Posted by Reefing Madness View Post

One Damsel in a tank is pretty rough, and more than one is alittle more than dangerous.
Okay Reefing, because the behavior of Damsels is so evident, you just confirmed my conviction and now I'm thinking of pulling almost all of them out of my main tank. I read that a Kupang Damsel is one of the least aggressive Damsels, if fact mine purposely stays in one corner of the tank to avoid all the other Damsels and I'll probably keep just that one in my main tank. I'm thinking of small Damsel tank so if they kill each other off it won't be such a costly investment as when they're killing off other more expensive fish. Thanks again.
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post #11 of 11 (permalink) Old 02-26-2012, 02:28 PM
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Re: Fish Disappearing in my Tank


My 240g Reef Tank Pics
Water Parameter: Alk-8:PH-8.2:Cal420:Phosphate.05:Temp77:Nitrates-20:Mag1250:SG1.025
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