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Biology: Atlantic Molly fish of Mexico survive high hydrogen sulfide acid. There is hope for the future of fish as the world is polluted more every day. Some fish can live in extreme toxic, acidic environments. For example, the Atlantic Molly fish of Mexico can survive high levels of hydrogen sulfide acid. They are the only fish in volcanic freshwater springs. Mollies do not filter out the toxin. They turn on certain genes that do the filtering job for them. Of the fish's 35,000 genes 170 are enhanced in the process: these linked genes are all involved in removing hydrogen sulfide. If things get serious and species of fish begin to die out, this group of genes could be "spliced" into the gene structure of endangered fish. They would not be the same fish, but at least some vestige of the evolutionary sequence of dying fish would live on. ◆ Biology by Ty Buchanan   ◆ Adventure Australia Funny Animal Photos Funny Weird Things Articles News Reviews ●

While glucosamine has priced itself out of reach of the average consumer, sales of fish oil are still booming. Just about everyone you bump into is on it. The problem is the world-wide market is not sufficiently policed to ensure a healthy product. Cut prices for this popular addition to diet is a feature of the market. But are we paying the price? Tests show that the majority of packaged fish oil is contaminated and labels stated omega-3 fatty acid at much higher levels than reality. In other words suppliers are lying. Less than 10 per cent of tested sealed fish oil had the printed omega-3 fatty acid level. Some capsules are downright dangerous to take. In 92 per cent of tested packages the omega-3 fatty acid had oxidised - that is "gone off". What is more frightening is that most fish oil comes from two first world countries, namely, Australia and New Zealand. What happened to the philosophy of only exporting the best? This is disgraceful. Internation

Animals will not only die if they remain in regions affected by global warning, they will not know what they are doing. Research shows that rising carbon dioxide changes the behavior of fish. Carbon dioxide makes the acidity of ocean water rise. Like humans, fish rely on nerve cells to "perceive" the environment they live in, like detecting hot and cost, pain or painless. They also have to rely on environmental cues to behave in a particular way. Fish smell predators so they normally move away from them, but high acidity in the water makes the smell attractive. Small fish move too close to predators, so they are easily caught and eaten. Fish behave this way due to their nerve cells trying to maintain a balance with the environment. With a rise in carbon dioxide and acidity, bicarbonate and chloride levels rise inside nerve cells, so a feeling of security is not turned off by the smell of predators. A switching chemical, GABA, becomes irregular opening nerves which