It is quite notable that active fishes have a very big proportion of red muscles in their trunk musculature than the less active fishes possess. Red muscles have further been a tool behind the nomenclature of certain fishes into functional groups reflecting different adaptabilities. Different measures of the red muscles and mobile characteristics have several limitations. However, the relationship between the two has not been proved quantitatively. â€Secondary data strongly support the idea of a very strong association between the proportion of red meat and the mobilityâ€ (Sfakiotakis et al, 1999. p 239).
The most essential muscle in this line is the caudal peduncle of marine fishes. Fish has therefore been categorized as sedentary and mobile under the natural history as the school of thought. Further criticism has targeted the frequency of distribution of the amount of red muscle that provides evidence for two sub-divisions, which do not in any way confer association with the sedentary against the mobile class dichotomies. In this context, the ecophysiology of the fish in the marine environment includes Temperature, pH, and salinity, while aerobic performances involve activities that demand the use of oxygen while in marine water.