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 filters has lost popularity due to concerns about possible toxic build up? Bio Wheel Underground Filter Canister Filter Wet / Dry FilterWhich of these species is often dyed by injection? Glowlight Tetra Glassfish Glass CatfishThe word mbuna translates in English to Yellow Rockfish Algae Eater AggressiveWhich fin is present on a characin, but not on most other species? Pectoral Caudal Dorsal Adipose Leave a Reply Cancel reply Save my name, email, and website in this browser for the next time I comment.