Are Datnoids Color Blind?

[AquataHolic420]

If fish could see everything in color great why in the hell would they eat half of the stuff thrown at em lol[/B]. Prove that one

Hunger... do you try new foods that look different? what makes you so special and not fish? I think fish are advanced with their senses in different ways...maybe they like to try diffferent things..

 

[ammerman19]

gotta be honest with ya. I don't really buy that one though. I could see maybe a couple fish doing that but not a lot. And how would I catch the same fish on the same lure that was colored nothing like natural food.

 

[Euge]

ammerman great read. thanks for posting

 

[KenyanSandBoa]

not necissarily. There are MANY shades to the greyscale.

I understand that, but it would be pointless to have these extravagant lures and flies if all the fish saw was various shades of grey.

 

[AquataHolic420]

gotta be honest with ya. I don't really buy that one though. I could see maybe a couple fish doing that but not a lot. And how would I catch the same fish on the same lure that was colored nothing like natural food.

I think you must be talking about sunfish.. I'm Sure that fish can see colors, some fish just may be in better water conditions so they can see more... i think a catfish may be a kind of fish if any to see the "grey scale". But Sharks i know for a fact have species that see in excellent color. i Saw on Tv last night that Great white Sharks see underwater in excellent color, and also when they want a better look, they will lift their head out of water to peer at an object better.

 

[sandtiger]

Nearly all diurnal fish see in color. At least the majority, with over 25,000 species I'm sure there are some that don't. Studies show that some fish can detect some color variations even better then humans can. I'm pretty confident that datnoids are among these fish.

 

[ammerman19]

I think you must be talking about sunfish.. I'm Sure that fish can see colors, some fish just may be in better water conditions so they can see more... i think a catfish may be a kind of fish if any to see the "grey scale". But Sharks i know for a fact have species that see in excellent color. i Saw on Tv last night that Great white Sharks see underwater in excellent color, and also when they want a better look, they will lift their head out of water to peer at an object better.

I agree that Datnoids probably see in color. And you kinda proved my point with the sharks going out of the water to see better. Light penetration into water does not allow all frequencies of light to penetrate past certain depths. I believe that even fish that can see color great at a 2 foot depth can also see very well in shades of grey at say 25 feet deep or 50........basically the deeper they go the less color they will see. The dirtier the water the less color they will see. In a brightly lit aquarium that is 24" I would say most fish will see color.

 

[h20man]

I agree that Datnoids probably see in color. And you kinda proved my point with the sharks going out of the water to see better. Light penetration into water does not allow all frequencies of light to penetrate past certain depths. I believe that even fish that can see color great at a 2 foot depth can also see very well in shades of grey at say 25 feet deep or 50........basically the deeper they go the less color they will see. The dirtier the water the less color they will see. In a brightly lit aquarium that is 24" I would say most fish will see color.

I do a lot of free-diving and I do know that the color spectrum at about 30 feet underwater changes in the ocean. For example, the Priacanthus Meeki (Hawaiian Big-eye) and Myripristis Kumtee (soldierfish), are found at about this depth and their primary body coloration is a bright deep red with silver. At the depth of 30 feet the fish looks grey in color, but when brought to the surface they are a deep red.

I think that they are red for a reason. Because the red fades at about 30 feet and deeper it is to their advantage through natural selection to have this color so that they appear invisible and blend in to the environment. I know that larger predator fish enjoy eating the Priacanthus Meeki (Hawaiian Bigeye) and Myripristis Kumtee (soldierfish). Heck I don't blame them they taste good and were considered as a food source only for the Hawaiian royalty in ancient Hawaii. I also know that sharks and jacks enjoy eating these fish, because when you use them as bait they are usually snatched up by these fish.

Well back to the datnoids. My datnoids are in a well lit 15-gallon tank right now (will be moved either to a 40 or 55 gallon tank when they get a little bigger [The 40 and 55 gallon tank are cycling now]) so the loss of color at depth is not a issue here. Yet, the datnoids ignore the black mollies, like mollies are invisible to to them.

 

[h20man]

I do a lot of free-diving and I do know that the color spectrum at about 30 feet underwater changes in the ocean. For example, the Priacanthus Meeki (Hawaiian Big-eye) and Myripristis Kumtee (soldierfish), are found at about this depth and their primary body coloration is a bright deep red with silver. At the depth of 30 feet the fish looks grey in color, but when brought to the surface they are a deep red.

I think that they are red for a reason. Because the red fades at about 30 feet and deeper it is to their advantage through natural selection to have this color so that they appear invisible and blend in to the environment. I know that larger predator fish enjoy eating the Priacanthus Meeki (Hawaiian Bigeye) and Myripristis Kumtee (soldierfish). Heck I don't blame them they taste good and were considered as a food source only for the Hawaiian royalty in ancient Hawaii. I also know that sharks and jacks enjoy eating these fish, because when you use them as bait they are usually snatched up by these fish.

Well back to the datnoids. My datnoids are in a well lit 15-gallon tank right now (will be moved either to a 40 or 55 gallon tank when they get a little bigger [The 40 and 55 gallon tank are cycling now]) so the loss of color at depth is not a issue here. Yet, the datnoids ignore the black mollies, like mollies are invisible to to them.

I am just curious, has anyone fed their datnoids black mollies and have they eaten them? Or, did you experience a similar thing as I did (the black mollies were ignored)?