injured gar

[xander]

freezing them.

you do now that this hurts like hell as well right. how about placing them in boiled water?(after it's cooled)anyone know if this hurts or can explain how this brings about death almost instantly?

 

[demjor19]

you do now that this hurts like hell as well right. how about placing them in boiled water?(after it's cooled)anyone know if this hurts or can explain how this brings about death almost instantly?

freezing them is probably the most used method i've heard of. the few fish i have had to euthanize got wrapped in a towel and hit over the head. that works instantly.

so you want to put them in cold water?

 

[xander]

okay, here's what i know abt freezing, actually, it's cells would freeze, and at the point of death, every cell would simlutaniously burst, this is like getting every corner of your insides pierced by needles, and this hurts like hell and not to mention that it'll be so cold along the way. when you place a fish in cooled boiled water(no more oxygen) it'll just "roll over". after asking around, i've found that it's not instantanious but what i've learnt about in biology is that when you place a living organism in a medium that it cannot get oxygen, it actually just feels as though it's going to sleep.

 

[Polypterus]

okay, here's what i know abt freezing, actually, it's cells would freeze, and at the point of death, every cell would simlutaniously burst, this is like getting every corner of your insides pierced by needles, and this hurts like hell and not to mention that it'll be so cold along the way. when you place a fish in cooled boiled water(no more oxygen) it'll just "roll over". after asking around, i've found that it's not instantanious but what i've learnt about in biology is that when you place a living organism in a medium that it cannot get oxygen, it actually just feels as though it's going to sleep.

Not that I want to give a full explianation of ectothermic biology but
Fish are cold-blooded, after a certain temp is reached the whole fish shuts down metabolically, this is often before the actual freezing point. The fish just "Goes to sleep" It is not capable of being conscience.

Some fish can actually be frozen or kept at very low temps for a time and actually be re-animated just by warming the water.

I have no clue how any fish would be killed by putting them in water. (Boiled or not) That and even if boiling water did remove oxygen. (which it does not) Try that with a gar and it will laugh at you..They breath air

 

[demjor19]

Not that I want to give a full explianation of ectothermic biology but
Fish are cold-blooded, after a certain temp is reached the whole fish shuts down metabolically, this is often before the actual freezing point. The fish just "Goes to sleep" It is not capable of being conscience.

Some fish can actually be frozen or kept at very low temps for a time and actually be re-animated just by warming the water.

I have no clue how any fish would be killed by putting them in water. (Boiled or not) That and even if boiling water did remove oxygen. (which it does not) Try that with a gar and it will laugh at you..They breath air

thanks for the explanation. it was early and i was feeling rather lazy.
i also thought he realized what cold blooded meant and that cold blooded animals don't get cold.

off topic, but the freezing method is also usd on injured/dying herps which are also cold blooded.

 

[xander]

Fish are cold-blooded

I have no clue how any fish would be killed by putting them in water. (Boiled or not) That and even if boiling water did remove oxygen. (which it does not)

oh yeah i forgot abt the cold blooded part..when it come to euthanizing i've only done research on mammals, warm blood, cold blood...yeah sorry-_-

as for the second i'm pretty sure boiling water does remove oxygen. a friend of mine boiled water to "cleanse" it, and all the fish in there died. and this happened more than once, till my mum(a science teacher) told him that boiling the water removes the dissolved oxygen through all the bubbles etc.

i also thought he realized what cold blooded meant and that cold blooded animals don't get cold.

alright it was dumb that i neglected the fact that fish are cold blooded but i'm not THAT dumb..

 

[demjor19]

oh yeah i forgot abt the cold blooded part..when it come to euthanizing i've only done research on mammals, warm blood, cold blood...yeah sorry-_-

as for the second i'm pretty sure boiling water does remove oxygen. a friend of mine boiled water to "cleanse" it, and all the fish in there died. and this happened more than once, till my mum(a science teacher) told him that boiling the water removes the dissolved oxygen through all the bubbles etc.



alright it was dumb that i neglected the fact that fish are cold blooded but i'm not THAT dumb..

even if boiling water did remove the oxygen...as it cooled it would gain it back.

 

[xander]

nope, for some reason. i'll go research on this first, then will post again.

ps: don't worry no fish are gonna be hurt in my research

 

[demjor19]

nope, for some reason. i'll go research on this first, then will post again.

ps: don't worry no fish are gonna be hurt in my research

lol! well i know your not going to hurt a gar doing that.

 

[E_americanus]

freeze the fish, it's one of the best ways to euthanize...you could smash it like jordan was saying (which is also effective), but that's somewhat messier.

either way, i agree with richard and jordan on the boiling issue...not going to work with gars by a longshot (longnose? sorry ) and freezing is faster and less time-consuming than boiling anyway.

i've found introducing a 10" gar to a 15" Polypterus weeksii can also be an effective method for 'euthanizing' a gar...

...not that that was done on purpose!!!--
--solomon