Euthanizing with benzocaine? - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 20 Old 04-26-2013, 08:40 PM
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finquel is so fast, I still don't think there is a problem..but then, I've never used it on a large fish

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post #12 of 20 Old 04-26-2013, 08:41 PM
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It was a betta and yes thankfully, Finquel is very fast. I was grateful for that. Most likely you are right and there wouldn't be a problem but I had the baking soda on hand and it didn't hurt to try it. :)
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post #13 of 20 Old 04-26-2013, 08:43 PM
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the old adage applies: better safe than sorry.. and if it can perhaps ease the passage more, all the better..

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post #14 of 20 Old 04-26-2013, 09:16 PM
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I just happened to come across this article today on the subject.

Painful fish deaths? You might be guilty

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #15 of 20 Old 04-26-2013, 09:36 PM
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Very informative, Byron, and definitely sheds some light on the controversy of fish euthanization. It does support the theory that Finquel, which is MS-222, causes the water to be highly acidic and therefore a buffer is needed. Interesting that Finquel itself does not mention this in their extensive pamphlet which accompanies the jar.
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post #16 of 20 Old 04-28-2013, 12:57 PM
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How about where it is next to impossible to catch fish to net them without causing massive stress by chasing them all over a tank? my tank is winding down as the fish have slowly died off from old age but I have 3 fish left and they are starting to show signs of a disease. All of them are older. I hate to see them in pain and would like to put them out of their misery but tried catching them but couldn't. Any suggestions on euthanizing them in the tank?

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I just happened to come across this article today on the subject.

Pep

"Whether you think you can, or think you cannot, you are correct; Henry Ford"
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post #17 of 20 Old 04-28-2013, 01:11 PM
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How about where it is next to impossible to catch fish to net them without causing massive stress by chasing them all over a tank? my tank is winding down as the fish have slowly died off from old age but I have 3 fish left and they are starting to show signs of a disease. All of them are older. I hate to see them in pain and would like to put them out of their misery but tried catching them but couldn't. Any suggestions on euthanizing them in the tank?
I would definitely net them out first. A "quick" death is next to impossible in a tank. Plus, putting any substance in the tank to kill the fish would almost certainly make the tank useless for any future fish, as the substance would permeate everything, substrate, wood, rock, the silicone perhaps, filter... not a good idea.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #18 of 20 Old 04-28-2013, 01:31 PM
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Quote:
Originally Posted by Pep View Post
How about where it is next to impossible to catch fish to net them without causing massive stress by chasing them all over a tank? my tank is winding down as the fish have slowly died off from old age but I have 3 fish left and they are starting to show signs of a disease. All of them are older. I hate to see them in pain and would like to put them out of their misery but tried catching them but couldn't. Any suggestions on euthanizing them in the tank?
I find that removing the water makes fish much easier to catch.

Though, if you are unable to catch the fish, then perhaps they are not yet at the point that they should be culled.

125 - BGK, chanchito cichlid, pictus cats, silver dollars, palmas bichir
125 - cichlids (severums, bolivian rams, chocolate), rainbows ( turquoise, red), loaches (angelicus, zebra, kuhli and horseface), plecos (BN, RL and clown), denison barbs, tiretrack eel, pearl gouramis, betta
90 - Congo tetras, african knife, upside down cats, spotted ctenopoma, kribensis, delhezzi bichir
2.5 - betta
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post #19 of 20 Old 04-28-2013, 04:16 PM
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Well, I am not too worried about substrate or wood as it will all be coming out. But the silicone is a good point.

and lowering the water level I was thinking of and will have to do it that way. The 3 red lines are old and hurting but still pretty darn fast when stressed with a net in the water. Thanks for the info.

I need to try to find some finquel now as I like that idea. BigAls online in canada doesnt have it.

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Originally Posted by Byron View Post
I would definitely net them out first. A "quick" death is next to impossible in a tank. Plus, putting any substance in the tank to kill the fish would almost certainly make the tank useless for any future fish, as the substance would permeate everything, substrate, wood, rock, the silicone perhaps, filter... not a good idea.

Pep

"Whether you think you can, or think you cannot, you are correct; Henry Ford"
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post #20 of 20 Old 04-28-2013, 07:46 PM
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unless you are going to mothball the tank, you could pump the water out into a container, and once you have caught all the fish. put it back.

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