Betta Fish Eyesight is Poor
Betta fish eyesight is a frequent question on Internet forums. Surprisingly, many people believe that bettas have superb vision. They draw such a conclusion from the fact that bettas move to the surface when a man holds a hand over the tank ready to feed the bettas.
Unfortunately, this reaction has nothing to do with excellent eyesight.
On each side of betta's head lies a bulging eye. Eyes are protruding and have black colored iris. The rest of the eye could be of any color. A Betta cannot blink its eye. The eyes move as per the movement of the target. The sharp eyesight is one of the prime reasons to explain how Bettas are highly efficient warriors of their habitat. Betta fish swim to the top of the tank whenever they see a human hand hovering over it to place the food in. A Betta has monocular vision, which means that it can see in two directions at the same time. Overall, the Betta's eyesight is somewhat poor. To detect vibrations and get an overall feel for its surrounding, bettas use a "lateral line," which runs down their sides. They have poor vision of things out of the water, they can see you. My male betta will often beg for food when I walk by.
However, bettas have excellent sense of motion, they detect the movement in the room, and keen sense of smell, but not you from inside the tank.
Because of poor betta fish eyesight, a proper tank for it should be over 5 gallons, otherwise the fish feel "lost" and scared because of too much water.
I hope this answers a lot of questions about betta fish eyesight. Del.icio.us Digg it Reddit Yahoo MyWeb Google Bookmarks StumbleUpon
Unfortunately, this reaction has nothing to do with excellent eyesight.
On each side of betta's head lies a bulging eye. Eyes are protruding and have black colored iris. The rest of the eye could be of any color. A Betta cannot blink its eye. The eyes move as per the movement of the target. The sharp eyesight is one of the prime reasons to explain how Bettas are highly efficient warriors of their habitat. Betta fish swim to the top of the tank whenever they see a human hand hovering over it to place the food in. A Betta has monocular vision, which means that it can see in two directions at the same time. Overall, the Betta's eyesight is somewhat poor. To detect vibrations and get an overall feel for its surrounding, bettas use a "lateral line," which runs down their sides. They have poor vision of things out of the water, they can see you. My male betta will often beg for food when I walk by.
However, bettas have excellent sense of motion, they detect the movement in the room, and keen sense of smell, but not you from inside the tank.
Because of poor betta fish eyesight, a proper tank for it should be over 5 gallons, otherwise the fish feel "lost" and scared because of too much water.
I hope this answers a lot of questions about betta fish eyesight. Del.icio.us Digg it Reddit Yahoo MyWeb Google Bookmarks StumbleUpon
posted by Kelly Wright at 3:58 PM
4 Comments:
you said that we should keep the betta tank over 5 gallons or the betta will feel lost from too much water?! that doesn't make sense to me. over five gallons is a lot of water. Shouldn't it make the betta feel safe? or then how about less than five gallons if they will feel scared from too much water. that's confusing
my halfmoon betta have white spot in the eye when situation get dark...why?
never new that its interesting my beta fish just getting loved in its new home!!!!!!!!!
ppooooooorrrrrr beta fish ):
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