The role of length–weight relationships in monitoring and optimizing fish maintenance: insights from the Primately Aquarium
Stepankov A.P. 1
Year: 2026, Number: 2, Pages: 66-75
In this study, empirical data on standard length and body weight of fish maintained in closed recirculating systems were cleaned and analyzed. Species with similar length–weight relationships were grouped through the protocol specifically developed for the Primorsky Aquarium facilities. Based on pairwise quantitative assessment of primality among individual regression models, 14 stable groups were formed, each comprising 2 to 7 species. For each group, generalized length–weight relationships were constructed using pooled observations. The resulting group curves exhibited a high degree of overlap with individual regressions and reflected specific maintenance conditions at the Primorsky Aquarium. The derived relationships reduce the number of operational formulas and provide robust body weight estimates across a wide size range, improving biomass calculation accuracy and practical applicability for establishing feeding standards, as well as for biomass monitoring.
DOI: 10.25221/2782-1978_2026_2_6
Keywords: length–weight relationship, length–weight, biomass, biomass estimation, aquarium, group regressions, feeding standards,
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