Pelagic fish coloration

Read this article and you may never look at your flies the same way again.

Do fish see color? IS COLOR IMPORTANT? This is a serious question for fly tiers and fly fishermen to ask. Some anglers maintain that the choice of color is critical, while others say it is not important. Scientifically speaking, there is evidence to suggest that both points of view may be correct. There is good evidence that picking the appropriate color or colors will, under certain conditions, improve your chances of attracting fish, but science can also show that in other situations, the color of your fly is of limited value or no importance whatsoever.

Fish have been around for more than 450 million years and are remarkable creatures. Over the thousands of centuries, they have made many superb adaptations to survive in the marine environment. Living in the world of water is not easy, but it does present some environmental opportunities as well as serious challenges. Sound, for example, travels almost five times faster and much better in water than it does in air. The ocean is actually a very noisy place. Fish capitalize on this by having an excellent sense of hearing, using both their inner ears and lateral lines to detect prey or avoid enemies.

Water also contains unique chemical compounds that fish utilize to identify other members of their species, tell when reproduction time has arrived, find food, detect predators, and perform other functions. Fish have evolved a remarkable sense of smell that is thought to be about one million times better than that of humans.

Water, however, presents a serious challenge for fish and fishermen when it comes to vision and color. Many characteristics of light quickly change as it moves through water. The first thing to realize is that the color of your fly in the water is almost always different from what it is in the air. I have to be a little technical to explain this, but I think if you bear with me, you’ll have a better understanding of how fish perceive color and how this impacts the flies we tie and use. And while I mostly refer to fish and fishing in salt water, these same principles apply to the freshwater environment.


The extended Kalman filter approach to VPA (C.M. 1983 / D:17. Statistics Committee; ref. Demersal, Pelagic and Baltic Fish Committees)
Book (International Council for the Exploration of the Sea)

Fish Stocks/ Windpower/ Wave Generators

2006-11-14 00:23:43 by jaybug39

I have read that ocean fish stocks will be gone in a few years. And I have been thinking since I heard that Massachusetts refused to build wind turbines in Long Island Sound as they were unattractive, why not build some in the pacific where we could create national sea life refuges?
This would help out coastal communities in several regards. Some people would come see the turbines, much like some people visit lighthouses. The energy produced would ease any difficulties coastal communities may face from their currently existing long distance power transmissions. And they would get the benefit of knowing that fish will be around in the future


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