In North Dakota's Bakken formation, the break-even cost has fallen into the $20s in some counties, the state's Department of Mineral Resources reported last month. Producing a barrel of oil would still be profitable at $24 in Dunn County, down from $29 last October.
You can exclude this risk. Water temperatures and influence on fish behaviour Normal temperatures for keeping discus fish lie at 29-30 Â°C. If your fish are too calm and do not eat greedily but are hesitant about eating, raise the water temperature for c. two weeks to 33 Â°C. This will raise the metabolic rate of the discus fish and encourage their appetite and their sense of hunger.
With discus, I've observed situations where discus are more aggressive than angelfish, and other situations where angelfish are more aggressive feeders. I currently have 6 Altum angels with 3 scalare angels and 3 adult discus ... the discus will be the first to the food.