Angelfish
Common name: Angelfish
Scientific name: Pterphyllum scalare
Production potential: Moderate
Marketing potential:
Potential: High
Size: 1/2 inch - 3 inches length
Market: Ornamental
Temperature requirements:
Growing: 75-84°F
Spawning: 82°F
Lethal: 60°F
Feed requirements:
Protein: 40% crude protein, using a combination of flake, live, or frozen feeds
Fat: 10-15%
Spawning requirements: Once broodfish start to exhibit courtship behavior, they are transferred to an 80 liter spawning tank. Females spawn on a vertical substrate such as a slate tile. Eggs are adhesive and will hatch in two days at 82°F. Each female may lay up to 200 eggs per female every 7 to 14 days. First feeding using newly hatched brine shrimp can begin five days after hatching. After fertilization, the slate with attached eggs is placed in a 3 to 5 gallon aquarium containing enough methylene blue to give a dark blue color. An air stone should be placed underneath the slate to provide circulation. After hatching one-half of the aquarium, water should be replaced each day so by the time the fry are free-swimming, the water is only slightly blue.
Most common production systems: Recycle systems, ponds. When the fry are free-swimming, they should be transferred to an aerated 15 gallon aquarium at 300 fry per aquarium. The aquarium should have a water depth of approximately 4 inches and be filtered with a sponge filter. The shallow water depth facilitates the feeding of the fry. When the fry are approximately 0.6 inches in diameter, they should be transferred to a 30 to 55 gallon aquarium with aeration and filtration. Fry should grow to a marketable size in 6 to 8 weeks.
http://ag.ansc.purdue.edu/courses/aq448/species/ornamentals.htm