Rapid physiological color change in this species is likely to be mediated by the movement of pigment organelles within chromatophores (specialized pigment cells). Within a minute, the rock goby can change its color and brightness to disguise itself from hungry predators, such as birds evolved under selection to change colour to enable them to camouflage on a range of different background types. Research from the University of Exeter has revealed that the rock goby (Gobius paganellus), an unassuming little fish commonly found in rock pools around Britain, southern Europe, and North Africa, is a master of camouflage and can rapidly change colour to conceal itself against its background. The rock goby One such species is the rock goby (Gobius paganellus), a common rockpool fish capable of rapidly (within one minute) changing its colour and luminance (perceived lightness) when placed on different backgrounds. The unassuming rock goby, a small fish that can be found in rock pools around the United Kingdom, southern Europe and North Africa, is a master of camouflage, a new study finds. Credit: Alice Lown Research from the University of Exeter has One such species is the rock goby (G. paganellus Linnaeus, 1758), which rapidly changes its luminance (perceived brightness) and color for camouflage (Stevens et al., 2014a). The rock goby can change both its color and brightness to match its background in just one minute. The neck area lacks scales and there is a pale band on the top of the first dorsal fin. This band is creamy or yellowy in females and a bright yellow to orange in males. The unassuming rock goby, a small fish that can be found in rock pools around the United Kingdom, southern Europe and North Africa, is a master of camouflage, a new study finds. Around the nostrils there are 5-6 finger-like protrusions. Much of the research on behavioural background matching has been conducted on species with fixed coloration and body patterns, while less is known about the role background choice plays in species capable of rapid (within minutes or seconds) colour change. Within a minute, the rock goby can change its color and brightness to disguise itself from hungry predators, such as birds and fish. Both dorsal fins lack black spots on their leading edges. Within a minute, the rock goby can change its color and brightness to disguise itself from hungry predators, such as birds and fish. The unassuming rock goby, a small fish that can be found in rock pools around the United Kingdom, southern Europe and North Africa, is a master of camouflage, a new study finds. The rock goby is usually dark brown in colour or light brown with dark mottlings and there is a pale band on the upper margin of the first dorsal fin. The rock goby can change its skin coloring within a minute to blend in with its environmen and avoid predation, a new study found. The ability to rapidly change color should be a major advantage for fish when predators are nearby. PDF | Some species actively change color and pattern for camouflage on a range of background types. Image credits: BAS KERS (NL)/FLICKR (CC BY-NC-SA 2.0. The rock goby is usually black with white blotches, but they can change color, and males are much more black when guarding the eggs.

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