A) A prominent spine at the angle of the operculum (gill cover) B) Three dorsal fins C) Bright red coloration all over the body D) Absence of scales
A) Acanthuridae B) Labridae C) Pomacanthidae D) Chaetodontidae
A) Freshwater rivers B) Arctic waters C) Open ocean D) Coral reefs
A) Plankton B) Sponges C) Small crustaceans D) Algae
A) Always black and white B) Different from adults of the same species C) Always fluorescent D) Identical to the adults
A) Presence or absence of fins B) Color patterns and markings C) Number of teeth D) Body size alone
A) Flame Angelfish B) French Angelfish C) Emperor Angelfish D) Queen Angelfish
A) Eibl's Angelfish B) Midnight Angelfish C) Coral Beauty Angelfish D) Lemonpeel Angelfish
A) Freshwater lakes B) Tropical and subtropical waters C) Polar regions D) Temperate zones only
A) Using jet propulsion B) Swimming with pectoral fins C) Floating passively D) Crawling along the substrate
A) Exactly 5 years B) Always less than 1 year C) Always more than 50 years D) Varies greatly depending on the species
A) Often solitary or found in pairs B) Always fight each other C) Always live in large schools D) Migrate together in large groups
A) Flame Angelfish B) French Angelfish C) Japanese Angelfish D) Coral Beauty Angelfish
A) Asexual reproduction B) Live birth C) Broadcast spawning D) Internal fertilization
A) To filter food B) To help them swim faster C) To attract mates D) Defense against predators
A) Coral Beauty Angelfish B) Scribbled Angelfish C) Regal Angelfish D) Clarion Angelfish
A) Orange B) Yellow C) Blue D) Purple
A) Between 6 and 12 inches B) Exactly 4 inches C) Less than 2 inches D) Over 3 feet
A) Fin shape B) Diet alone C) Size and habitat D) Scale color
A) Yellow front and black rear B) Iridescent green scales C) Pink stripes D) All red body
A) Habitat destruction B) Overpopulation C) Lack of predators D) Extremely cold temperatures
A) Laterally compressed (flat) B) Cylindrical (round) C) Globular (ball-shaped) D) Elongated (snake-like)
A) Blueface Angelfish B) Asfur Angelfish C) Passer Angelfish D) Goldflake Angelfish
A) Potter's Angelfish B) Japanese Angelfish C) Watanabe's Angelfish D) Goldflake Angelfish
A) Regal Angelfish B) Lemonpeel Angelfish C) Flame Angelfish D) Bicolor Angelfish
A) Hiding or loss of appetite B) Rapid swimming in circles C) Laying on the bottom of the tank D) Increased aggression towards tank mates
A) Exclusively flake food B) Only frozen brine shrimp C) Varied diet including sponges, algae, and meaty foods D) Only live food
A) Subtle differences in coloration or fin shape B) Size difference of more than double C) Males have prominent horns D) Completely different body patterns
A) They are related but belong to different families B) Angelfish are a type of butterflyfish C) Butterflyfish prey on angelfish D) They are the same fish at different life stages |