Causes[ edit ] Depleted oxygen levels are the most common cause of fish kills. In this way eutrophication can have devastating consequences for the health of benthic life Fish kills may result from a variety of causes. Of known causes, fish kills are most frequently caused by pollution from agricultural runoff or biotoxins. Ecological hypoxia oxygen depletion is one of the most common natural causes of fish kills.
Why is there so much death and disease among sea life living near the west coast of North America right now? Could the hundreds of tons of highly radioactive water that are being released into the Pacific Ocean from Fukushima every single day have anything to do with it?
Right now, massive numbers of fish and sea creatures are dying in the Pacific Ocean. In addition, independent tests have shown that significant levels of cesium are in a very high percentage of the fish that are being caught in the Pacific and sold in North America.
Could this have anything to do with the fact that the largest nuclear disaster in the history of mankind has been constantly releasing enormous amounts of radioactive material into the Pacific Ocean for more than two years?
Seattle Aquarium biologists Jeff Christiansen and Joel Hollander suited up in scuba gear in their search for answers.
Could it be Fukushima? The arms just detach, and the central disc falls apart. It seems to happen rapidly, and not just dead animals undergoing decomposition, as I observed single arms clinging to the rock faces, tube feet still moving, with the skin split, gills flapping in the current.
Then we did our second dive in an area closed to fishing, and in absolutely amazing numbers. The bottom from about 20 to 50 feet [6 to 15 meters] was absolutely littered with arms, oral discs, tube feet, gonads and gills … it was kind of creepy.
Lance Barrett-Lennard says he fears changes in the ocean environment are prompting odd behaviour and an unusually high mortality rate.
Barrett-Lennard says the southern resident orca pod, which is found in the Salish Sea between Vancouver Island and the B. I am just asking the question. Clearly something unusual is happening to the Pacific.
We saw one whale, sort of rolling helplessly on the surface with what looked like a big tumour on its head. It was pretty sickening. But this time, for nautical miles there was nothing alive to be seen. The wave came in over the land, picked up an unbelievable load of stuff and carried it out to sea.
When you consider the evidence presented above along with all of the other things that we have learned in recent months, it becomes more than just a little bit alarming.Lake Gordon is a large lake in NJ, home to abundant amounts of fish.
Once a remote area, the south shore of the lake is now a newly developed community. This summer, residents thought they noticed a large number of dead fish in the lake.
Further investigations confirmed there was, indeed, a .
Chinook salmon numbers had been dwindling since , and as a result, commercial harvest of the fish — also called king salmon for their immense size and sumptuous meat — was frequently halted.
Fish kills usually result from too little oxygen in the water, according to biologists with the Florida Fish and Wildlife Conservation Commission. The Southwest Regional Office of the Commission covers 13 southwest Florida counties and receives between and fish kill reports each year.
The fish need an adequate level of KH to survive, as they absorb the dissolved minerals in the water through their skin. In areas where the KH is low, a heavy fish load, or infrequent water changes can cause the KH to get used up, and when that happens, you will experience a pH crash.
If the KH levels. The term fish kill, known also as fish die-off, refers to a localized die-off of fish populations which may also be associated with more generalized mortality of aquatic life. The most common cause is reduced oxygen in the water.
Oct 13, · Okay so im a new aquarium owner and thought i'd start off small. Bought a 10 gallon tank and a gallon aquatech filter to go along with it. Asked others inside the store if i needed a pump as well because i know certain species do need air pumps.
They all said no. So, i bought 2 Black Moors, 1 veiltail (the belly on that thing was attheheels.com: Resolved.