Expert Tropical Fish Quiz Welcome to the Expert Tropical Fish Quiz This tropical fish quiz for experts will provide 4 randomly generated questions. Try the quiz as many times as you want. The questions will be different each time. Click the NEXT button to begin. Which of these species is often dyed by injection? Glassfish Glowlight Tetra Glass CatfishWhich fin is present on a characin, but not on most other species? Dorsal Caudal Pectoral AdiposeThis species from Madagascar is extinct in the wild. Malawi Blue Dolphin Pindani MenaramboWhich of these filters has lost popularity due to concerns about possible toxic build up? Wet / Dry Filter Underground Filter Bio Wheel Canister FilterTime is Up! Leave a Reply Cancel reply Save my name, email, and website in this browser for the next time I comment.