Thanks lol. My only intention is too learn more, especially from an evolutionary / nature standpoint. I always appreciate the knowledge from those more experienced such as golcondorus and duanes. Drstrangelove, thanks for the read!
Why are Wild Red Devils brightly colored?
- Thread starter Empyreal
- Start date
Thanks lol. My only intention is too learn more, especially from an evolutionary / nature standpoint. I always appreciate the knowledge from those more experienced such as golcondorus and duanes. Drstrangelove, thanks for the read!
check out how the bright yellow, female Parachromis appears out of nowhere at about 1 minute into the video, and disappears just as quickly.
It was barely over an arms length from me, when I first spotted it, and is in shallow water.
And at 30 ft, unless the water is crystal clear, it is amazing how even the brightest fish
can be almost invisible.
https://www.youtube.com/watch?v=OT8GK9ZaJJo
It was barely over an arms length from me, when I first spotted it, and is in shallow water.
And at 30 ft, unless the water is crystal clear, it is amazing how even the brightest fish
can be almost invisible.
https://www.youtube.com/watch?v=OT8GK9ZaJJo
Thats so awesome. Ok so I see your point. The bright colors wont really attract predators in such murky water, so then what is it for? Is it for courtship? Are brighter colors a sign of greater physical health - to attract mates? Still want to know the function of brightly colored fish if anyone knows.
Color pattern helps identify potential mates in murky water, in close quarters.
I believe the shoal at 5:30 are Tilapia, could be just about any species.
I've seen them in Florida, Mexico, and a few weeks ago in La Laguna below, in Panama.
I believe the shoal at 5:30 are Tilapia, could be just about any species.
I've seen them in Florida, Mexico, and a few weeks ago in La Laguna below, in Panama.
Color pattern helps identify potential mates in murky water, in close quarters.
I believe the shoal at 5:30 are Tilapia, could be just about any species.
I've seen them in Florida, Mexico, and a few weeks ago in La Laguna below, in Panama.
Nice, makes sense now. Thanks for the info guys. I joined this site to learn things like this
^
this
In the following paper, George Barlow gets into the color variants starting on page 11 through to page 16. An old but interesting paper for anyone that hasn't already read this info.
http://digitalcommons.unl.edu/cgi/v...edir=1#search="lake masaya water temperature"
Barlow stated that Lake Apoyo was always very clear in comparision, and while the fish carried the gold polychromatic gene, it was not expressed in any of the population. Within the midas complex more colorful specimens of the gold morph were also found to be dominant over regular colored morphs.
Great Read, love the intro made me laugh. Interesting how they tried to introduce non-natives to the lake and non-fared well. That is unforunately, usually not the case! Also, extremely interest the paragraph on aggression between wild and aquarium midas. I guess people bred aggressive midas more often, seeing them as more of "wet pets". OR it may be possible that in aquaria, theres less room to move around, and constantly being "stuck" near another fish causes more aggressive outbreaks. Any thoughts?
I'd have to agree. My observance doesn't pertain exactly to what you're asking. Yet, I've noticed the Dovii from
http://www.monsterfishkeepers.com/forums/showthread.php?553563-30-quot-DOVII-AT-PUBLIC-AQUARIUM!!!
have grown extensively due to being in a 15,000 gallon tank. They unsurprisingly still had an alpha male, one that happened to be at least 30 inches long.
We all know 2 male Dovii at least 9 inches long can't dwell in mutual existence in a tank under 200 gallons.
It's less about "wild" fish being inherently more colorful and more about them receiving sunlight: http://scienceline.ucsb.edu/getkey.php?key=4113
Pigment in goldfish is found in pigment-producing cells called chromatophores, including xanthophores (containing yellow pigment) and erythrophores (containing red pigment). When fish are outdoors, they will receive ultraviolet light (including UVA and UVB light) from the sun. UVA and UVB are both high-energy light, and can be harmful to organisms, however, pigments can provide some protection from this, and ultraviolet light stimulates the chromatophores to produce more pigment. Artificial lights usually only provide a limited spectrum of light compared to sunlight and usually do not produce ultraviolet light. This means that over time, goldfish chromatophores exposed to artificial light will produce less pigment and the goldfish will look paler in color.
Sunlight + color-enhancing food is needed to maintain colors.
I agree about fish from dark / muddy water vs. clear water. I've collected some of the most amazing looking Gymnogeos from turbid cow ponds... and the ones from clear, flowing streams are more gray-colored.
Matt
Pigment in goldfish is found in pigment-producing cells called chromatophores, including xanthophores (containing yellow pigment) and erythrophores (containing red pigment). When fish are outdoors, they will receive ultraviolet light (including UVA and UVB light) from the sun. UVA and UVB are both high-energy light, and can be harmful to organisms, however, pigments can provide some protection from this, and ultraviolet light stimulates the chromatophores to produce more pigment. Artificial lights usually only provide a limited spectrum of light compared to sunlight and usually do not produce ultraviolet light. This means that over time, goldfish chromatophores exposed to artificial light will produce less pigment and the goldfish will look paler in color.
Sunlight + color-enhancing food is needed to maintain colors.
I agree about fish from dark / muddy water vs. clear water. I've collected some of the most amazing looking Gymnogeos from turbid cow ponds... and the ones from clear, flowing streams are more gray-colored.
Matt
