how hot does the water have to be to kill a fish ('c)?

Question

working on a school thing and i got that if the water is frozzen then the fish will die now i need the highest temp

Answer 1

Bob Stearns' Ultimate Guide to Fish Temperature Preferences

Know the preferred temperature range of your favorite species and you'll catch more of them.

Just like humans, fish have a defined temperature range in which they feel most comfortable. But unlike humans, that range varies - often considerably - from species to species. Therefore, the angler who knows the exact comfort range of the fish he's looking for has a definite edge.

Since fish cannot add or remove layers of clothing to stay comfortable, their only option is to move to another area when they find the temperature too warm or too cool. fish are essentially cold-blooded creatures (although some tunas are slightly warm-blooded), which means they can't regulate their body temperature internally. This makes them extremely susceptible to rapid fluctuations in water temperature. For example, plummeting temperatures can stun or even kill large numbers of fish before they're able to move to another area. Even subtle changes in temperature will affect the behavior of fish. In some cases, a degree or two can alter the feeding habits of a species without causing them to leave the area.

Get a Thermometer!
Given that water temperature plays such a significant role in the behavior of game fish, it therefore pays to have some means of directly measuring it. A simple thermometer will do. Some anglers permanently mount an outdoor thermometer in the boat's bait well, which is an ideal location as long as the well circulates raw water from outside the boat. Then there are electronic thermometers, including stand-alone gauges and those integrated with fishfinders and other electronics.

A quick glance at the thermometer will let you know if you should bother targeting a particular species. Striped bass, for example, typically head for deeper water when the shallows are too hot or cold for them. So why beat your brains out trying to catch stripers near shore in midsummer when the water temperature is over 75 degrees? Better to be looking for bluefish, which are happy as clams until the water passes the mid-80-degree mark.

Of course, there are some exceptions to this rule. For example, a high abundance of food will often keep game fish in an area that's a few degrees outside their preferred range.

Optimum Temperatures
Fish are, of course, happiest when they're in water of their optimum temperature range. This is especially true of many inshore species, such as striped bass, bluefish, bonefish and tarpon. Tarpon, for example, can often be found in deep channels when the water temperature is barely 70 degrees, and will only move onto the flats to feed when the water is within their optimum temperature range.

The accompanying chart is the product of hundreds of observations by fellow anglers and marine biologists around the country. If you fish constantly with some sort of water temperature gauge on board and pay careful attention to it, as many of us have learned to do, you will enjoy better fishing results.

Offshore Temperatures
Modern satellite technology has enabled us to determine offshore sea-surface temperatures accurately and in excellent detail. There are even several companies that provide this information in chart form for subscribers.

When a large body of warmer or cooler water moves into an area where those temperatures are not normally encountered, it often brings "exotic" species with it. This is why many tropical and subtropical game fish were caught from California to northern Washington during the 1997 El Niˆo. During this same period, overly warm water off some parts of Central and South America pushed those same species out of areas where they are normally abundant.

But if you wait for the next El Niˆo or La Niˆa to cause unusual fish movement, you'll be missing out on a lot of action. On the East Coast, large fingers or eddies of warm, tropical water often break off from the Gulf Stream and move into cooler water, bringing with them warm-water game fish. Billfish appear off New England every year because of this phenomenon.

On a more day-to-day level, noticing the change of a degree or two that delineates the edge of a current can pay big dividends. Such current edges, or rips, tend to concentrate baitfish, and fishing on the side of the rip where the temperature is best for the species you're seeking can make all the difference in the world. This is why no savvy offshore skipper would ever leave the dock without some sort of water temperature gauge.

Sudden Changes
A rapid decrease in water temperature can chase fish away or bring them in. Even a strong breeze that lowers the water temperature a few degrees can affect the presence or behavior of fish.

If the temperature of the water drops too fast, fish will sometimes leave the area, even if the temperature remains within their range of tolerance. Why? They simplydon't like the sudden change.

In some cases, the water temperature can plummet ten degrees or more overnight due to the passage of a cold front. Even if it's calm and sunny the next day, the ocean may seem like a biological desert. That's how important water temperature can be.

Species
Lower Avoidance
Optimum
Upper Avoidance
Comments/Updates

Albacore
59
62-65
66


Amberjack
60
65-75
80+


Atlantic Bonito
60
65-75
80+


Atlantic Cod
31
44-49
59


Atlantic Mackerel
40
45-55
70


Barracuda
55
72-80
86
RDS (Florida)

Bigeye Tuna
52
62-74
80
RDS (Equador)

Blackfin Tuna
65
70-75
82


Black Marlin
68
72-82
87
RDS (Panama/C.R.)

Bluefin Tuna
50
60-72
82
RDS (Cozumel)

Bluefish
50
66-72
84


Blue Marlin
70
74-82
88


Bonefish
60
72-84
92+
RDS (Florida)

Dolphin (fish)
70
72-78
82


Fluke (Summer Flounder)
56
62-66
72


Haddock
36
42-48
52


Jack Crevalle
65
70-85
90


Kelp Bass
62
64-68
72


King Mackerel
65
68-76
88


Permit
70
75-85
92
RDS (Florida)

Pollock
33
40-50
60


Pompano
65
70-82
85+


Red Drum (Channel Bass)
52
70-90
90+
RDS (Florida)

Red Snapper
50
55-65
70+


Sailfish
68
72-82
88


Skipjack Tuna
50
58-62
70


Snook
60
70-82
90


Spotted Seatrout
48
68-78
88


Striped Bass
50
55-65
75
T. Mleczko

Striped Marlin
61
68-76
80


Swordfish
50
60-70
80


Tarpon
70
75-90
100+
Once at 62F

Tautog
45
50-60
76
Updated info from SWS reader

Weakfish
45
56-68
78


White Marlin
65
68-78
80+


White Seabass
58
64-68
74


Winter Flounder
35
48-52
64


Yellowfin Tuna
64
72-82
80
RDS (All Oceans)

Yellowtail (Pacific)
60
62-66
70







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Answer 2

The easiest way to answer this question is: It has to be hot enough where the heat drives out enough oxygen to suffocate the fish.

The warmer the water, the less oxygen it can hold. So, as you heat the water, even up into the 90's, the oxygen is forced out and although the heat is not enough to kill the fish, the increase in their metabolism caused by the heat and the lack of oxygen will kill it.

If you aerate the water as you heat it, you can go into the low 100's before the fish die. So I would say, if you raise the temp to over 100, you will kill the fish with or without oxygen. Sorry, these are farenheit temps. Here is the conversion formula:

Subtract 32 from the Fahrenheit number.
Divide the answer by 9.
Then multiply that answer by 5.

BTW, as a footnote, as the temperature increases so does the level of agression for the fish.

Answer 3

yeah, if the water is frozen the fish will die but depending on the type of fish, i'm sure there is a cold temp that will kill fish before reaching the freezing point. also high temps.

Answer 4

depnding on the fish some fish can live in frozen water and some will die in anything under 70 degrees but the true answer is on how fast the water temp drops or rises

Answer 5

What type of fish? Water boils at 180 degrees so I guess that's not the answer you're looking for.

Answer 6

Different fish can live in different temperatures.

What type of fish?

Answer 7

depending on the fish, will depend in how high the temperature has to be before it will die.

What kind of fish is it?
Goldfish?
Beta?

I need more information to tell you what temperature a fish can live in before it dies

Answer 8

Burning hot!

Answer 9

buy some feeder fish and test it out

Answer 10

Oh i thought you were putting them in hot water.
I was going to say that's cruel.