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 fin is present on a characin, but not on most other species? Adipose Caudal Pectoral Dorsal Which of these species is often dyed by injection? Glass Catfish Glassfish Glowlight Tetra Which of these species are often dyed by injection? Paracheirodon nineis Phenoacogrammus interruptus Gymnocorymbus ternetzi This is a picture of a Yellow Lab Malawi Blue Dolphin Golden Mbuna Time's up Leave a Reply Cancel replyCommentEnter your name or username to comment Enter your email address to comment Enter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.