Application of Mathematical Modeling to Determine the Growth in Weight of a Fish Species

The quantity and quality of food available, temperature, oxygen, and other water quality factors are all important factors in fish growth. Every animal grows in length and weight throughout its life, establishing a standard relationship (length-weight relationship). The length-weight relationship is a standard method used in fishery assessment studies because it provides useful information about fish growth. The length-weight relationship connects mathematics and the evaluation of variation between the two variables, length and weight. In this research, we have developed a mathematical model to predict the weight variation of fish species over a period, given a constant supply of adequate food under necessary conditions. The developed Bernoulli mathematical model was solved directly, and the function was coded using Wolfram Mathematica, version 12, where the energy supplied by the food and the surface area of the fish, and the energy used by the fish seeking food and its weight were investigated. In conclusion, this research is very useful for scientists and fisheries in managing and producing healthy fish for human consumption