Gobionellus oceanicus: Integument

Abstract

This article describes the morphology of the respiratory surface gills and integument of the palate of the goby Gobionellus oceanicus (Pallas, 1770). We highlight the role of the palate integument's surface for air breathing in estuarine environments under probable hypoxia conditions. Such conditions can result from decreases in dissolved oxygen related to fluctuations in water level between tides, chemical composition, and increase in water temperature. Thus, a surface with respiratory characteristics can guarantee this fish's survival in environments that suffer constant variations.