highly significantp < 0.0001
genurostris showed highly significant association with pH (χ 2 = 27.16, df = 3, p < 0.0001) and temperature (χ 2 = 10.55, df = 3, p < 0.014)—a hump-shaped curve, peaking at 7 pH and dropping down at temperature between 28 and 30 °C (Fig. 6 ).