A) 88-92°F (31-33°C) B) 76-80°F (24-27°C) C) 70-74°F (21-23°C) D) 82-86°F (28-30°C)
A) 8.5 - 9.0 B) 5.0 - 5.5 C) 6.0 - 7.0 D) 7.5 - 8.5
A) Tap water without treatment B) Hard, alkaline water C) Brackish water D) Soft, acidic water
A) 25-50% weekly B) No water changes needed C) 10% monthly D) 50% monthly
A) Fin Rot B) Hexamita (Hole-in-the-Head) C) Ich (White Spot Disease) D) Velvet
A) Beefheart mix B) Goldfish flakes C) Vegetable pellets D) Bread crumbs
A) 20 gallons B) 10 gallons C) 40 gallons D) 75 gallons
A) Sponge and Biological filtration B) No filtration required C) Internal power filter only D) Undergravel filtration
A) Makes them more aggressive B) Improves their color C) Weakens the immune system D) Makes them grow faster
A) To save space B) To encourage breeding C) To make them feel comfortable D) To prevent disease outbreaks
A) Large rocks B) Crushed coral C) Bare bottom or fine sand D) Coarse gravel
A) Pour them directly into the tank B) Float the bag for 5 minutes C) Drip acclimation D) Turn off the lights for 24 hours
A) Bright colors and active swimming B) Lying on the bottom C) Clamped fins and hiding D) Erratic swimming
A) Low to moderate lighting B) UVB lighting C) Very bright lighting D) No lighting needed
A) Overfeeding B) Stress or poor water quality C) Old age D) Too much light
A) Aggressive or nippy fish B) Tetras C) Plecos D) Corydoras
A) Build bubble nests B) Scatter eggs on the substrate C) Livebearers D) Lay eggs on a vertical surface
A) Provides a surface for Discus to lay eggs on B) Hides the fish C) Adds oxygen to the water D) Filters the water
A) Parents eat the eggs B) Parents ignore the eggs C) Parents only care for the eggs, not the fry D) Parents care for the eggs and fry
A) Brine shrimp B) Flake food C) Secretion from the parents' skin D) Vegetable matter
A) Adds nutrients to the water B) Raises pH and hardens water C) Kills bacteria D) Lowers pH and softens water
A) White, stringy feces B) Bulging eyes C) Bright red gills D) Rapid breathing
A) Ignore water changes B) Keep the temperature low C) Maintain excellent water quality D) Overmedicate the tank
A) Lowers oxygen levels B) Increases pH C) Decreases pH D) Increases oxygen levels
A) 1 adult Discus per 10 gallons B) 20 adult Discus per 10 gallons C) 5 adult Discus per 10 gallons D) 10 adult Discus per 10 gallons
A) Raises the pH B) Lowers the temperature C) Adds minerals to the water D) Removes harmful chemicals and minerals
A) Feed small amounts multiple times a day B) Feed one large meal a day C) Leave food in the tank all the time D) Only feed once a week
A) Saltwater mangroves B) Amazon Swords and Anubias C) Duckweed and Water Hyacinth D) Cattails and Reeds
A) Increased susceptibility to peppering B) Faster growth rate C) Resistance to disease D) Enhanced color intensity
A) Red spots caused by bacteria B) Black spots caused by pigment cells C) Iridescent scales caused by genetics D) White spots caused by a parasite |