Although it seems a bit unfair to call it simple - I think their brains are perfectly adapted to what they do and that's what's important to remember about all this - brains can look different, but they've evolved for different tasks," she said.Scientists have shown for the first time how a species of tropical fish can distinguish between human faces.Newport added that the research provides evidence that fish have much more impressive visual discrimination abilities than previously believed. The archerfish used in experiments could chinese fish tanks demonstrate the ability to a high degree of accuracy; despite lacking the crucial neocortex part of the brain which other animals use for sophisticated visual recognition.Bleaching occurs when the water is too warm, forcing coral to expel living algae and causing it to calcify and turn white.Researchers found that the fish could discriminate one face from up to 44 new faces with up to an 81 per cent success rate.In laboratory-based tests, an archerfish was presented with two different images of human faces and trained to 'choose' one of them by shooting a jet of water at it."It is amazing what they can do with a really simple brain, as humans like to call it.. And if all of that is bleached we don't know if they're still going to be able to find their territories, their homes; we don't know how that will affect how they detect predators or potential prey," said Newport. They were able to do this even when features such as head shape and colour were removed from the images. When you look at a picture of a fish's brain it's only got what we consider the primitive sections of the human brain which are underneath that highly folded neocortex.The archerfish, found largely in Australia and southeast Asia, was chosen for its ability to spit a jet of water; a technique it uses to shoot down insect prey even above the water level
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