Beautiful Fishes in All around the World
Saturday, December 6, 2008
Fish Change the Different Colours
Some fishes cannot change colour. Examples include many of the uniformly dark-pigmented and some unpigmented cave fishes.
Many species of fishes however can change colour. The changes can be slow or fast. Slow changes of colour (eg breeding colouration) are generally under the control of hormones and are usually semi-permanent.
Rapid colour changes (eg stress responses) are largely under control of the nervous system although hormones may also be involved. The colour of fishes can also vary with the seasons, between day and night and even with changes in habitat and food.
There are two kinds
Many species of fishes however can change colour. The changes can be slow or fast. Slow changes of colour (eg breeding colouration) are generally under the control of hormones and are usually semi-permanent.
Rapid colour changes (eg stress responses) are largely under control of the nervous system although hormones may also be involved. The colour of fishes can also vary with the seasons, between day and night and even with changes in habitat and food.
There are two kinds
posted by Big Hotels And Resorts at 10:57 AM
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