Robuta

https://pmc.ncbi.nlm.nih.gov/articles/PMC17197/ Chemical defense: Aquatic beetle (Dineutes hornii) vs. fish (Micropterus salmoides) - PMC Captive largemouth bass (Micropterus salmoides) reject the gyrinid beetle, Dineutes hornii. They also reject edible items (mealworms) treated by topical... chemical defensemicropterus salmoidesaquaticbeetle