Halibut is the common name for two flatfish in the genus hippoglossus from the family of right eye flounders and in some regions and less commonly other species of large flatfish. As a result the eyes are then on the side which faces up.
The word is derived from haly holy and butte flat fish for its popularity on catholic holy days.
Fish with 2 eyes on one side. Some species face their left sides upward some face their right sides upward and others face either side. An upright body and an eye on each side. Larval flounder are born with one eye on each side of their head but as they grow from the larval to juvenile stage through metamorphosis one eye migrates to the other side of the body.
A bonus to catching flounder is that they are one of the best tasting fish to eat. When a flounder is young its body looks a lot like other fish. The group is divided into right eye or left eye fish depending on which eye moves.
Vision is an important sensory system for most species of fish fish eyes are similar to the eyes of terrestrial vertebrates like birds and mammals but have a more spherical lens birds and mammals including humans normally adjust focus by changing the shape of their lens but fish normally adjust focus by moving the lens closer to or further from the retina. The side to which the eyes migrate is dependent on the species type. Flatfishes are born with one eye on each side of their head but undergo larval metamorphosis where one eye migrates to the other side of the fish s head late in larval development producing.
However as a flounder grows older its body changes a lot. Halibut are demersal fish and are highly regarded as a food fish as well as a sport fish. One of the neatest examples of metamorphosis is eye placement in flatfish such as flounder.
Either way it s not pretty. This also requires the bones in their heads to move. A flatfish is a member of the ray finned demersal fish order pleuronectiformes also called the heterosomata sometimes classified as a suborder of perciformes in many species both eyes lie on one side of the head one or the other migrating through or around the head during development.
If you hold one up and it faces right when its eyes are above its mouth it s right eyed. Flounder is at the top of most inshore fishermen and their families. One eye migrates across their head and their mouth twists to the side.
It is now a young adult bottomfeeder with two eyes on the same side of its head a contorted mouth and one fin squashed against the sand. It will spend the rest of its life this way. As a result both eyes are then on the side which faces up.
The side to which the eyes migrate is dependent on the species type. This brings us on to a very important point. As they develop the eye begins to migrate moving over the top of the head eventually settling on one side or the other burgess says.
So get ready to try your best recipes with flounder.