The study aims to determine the effect of high warming temperature on the behavioral responses of the Ancistrus sp. orange on the rates of ventilation, intake of food, and patterns of behavior at normal (21 0C to 26 0C) and high temperature (26⁺ 0C) in the present warming scenario. The non-experimental and experimental data were running in a One-Way ANOVA in order to determine the significant difference in the effect of temperatures, rates of ventilation, intake of food, and patterns of behavior. Statistical analysis was performed at 0.05 level of significance. Based on the findings of the study, it found out that Ancistrus sp. orange showed resistance in heat stress but is it projected to go through any physiological impairment when they exposed longer into an increasing temperature. Their food intake has no significant difference with a p-value of .594, but behavioral changes and ventilation rates were significantly affected with the increased high temperature with a p-value of .00).