Tuna is one of the fishes that swim at very high speed has more white muscles

They also possess numerous correlated anatomical specializations that are unique in swimming mechanisms. The question of whether heterothermy is a design or an adaptive feature is still being contested. On this fact, there is a universal expectation that heterothermic fish will perform better than nonheterothermic fish due to the temperature variation. On this Basis, heterothermic is said to be adaptive and the temperature has a direct influence on enzymatic catalysis of reactions, and lactate oxidase is not excluded from this category of enzymatic reactions. The anatomical aspect can also not be exempted from this line of thought as a principle that enables excretion of wastes at a very fast rate, eliminating stress due to accumulation of waste products and by-products while supplying oxygen again to the tissues at a faster rate together with the metabolic fuel.

“The two blood vessels transport adequate oxygen to the powerful oxidizing muscles at any moment during strenuous activity” (Gray, 1996. p 222). Marginal oxidizing muscles are supplied blood by the large artery and the vein pairs. Small blood vessels stem from the main vessels and infiltrate between the surface red and the large bodies of white glycolytic muscles. Small blood channels then divide into smooth vessels that nourish the capillary beds contained by the internal tenderloins of the red muscles.

” The red oxidizing muscle is just a small segment in a position close to the mid-lateral line. This has numerous mechanical consequences; any force generated within any myotome has several trajectories” (Syme and Shardwick, 2001. p 195). Each myotome is separated by a layer of collagen that is a sheet-like called a myoseptum that forms the origin. The red muscle fiber is used for a long duration, low-intensity activity and is located along the mid-lateral line under the skin. “Contrary to the glycolytic also referred to them as a white muscle which is used for high intensity sprinting covers the rest of the body muscles” (Rosenberger, 2001. p 386).

Tuna is one of the fishes that swim at very high speed has more white muscles and fewer red fibers and this can be attributed to the high rate of production of the lactate that is produced and requires the red muscles that have high amounts of lactate oxidase to break down the lactate, Coupled with the very powerful cardiovascular system. The internal tenderloin of red muscles fibers is positioned inside the fillet, medial to the skin, and on the side of the spinal column.